Category: Resources

Iron was noticeable in a village. It was not an abstract word. It was the broken tool, the horse to be shod, the lock to repair, the cart that could not wait. This is why surnames connected with iron still feel concrete.

Ferrari, Ferraro, Ferrero, Ferraris: they all seem close. And they are, at least in image. But family research cannot stop at the image.

A Workshop Everyone Needed

The blacksmith worked for farmers, cart drivers, masons, families, landowners. A workshop could be small, but much of village life passed through it. Not only large objects. Small repairs too, nails, iron bands, wheel rims, hinges.

If your family surname recalls iron, it is worth looking for occupations in the records. But do not expect every ancestor to be a blacksmith. A name can remain long after the trade has disappeared.

Ferrari Is Not Always Ferraro

Ferrari and Ferraro share an obvious echo. Still, they are not the same thing. Ferrero and Ferraris add other forms, local histories and possible paths.

If two forms appear in the same town, note them. If they appear in families linked by marriages or witnesses, better still. If they are far apart, do not join them only because they sound alike. Iron is a shared clue, not automatic kinship.

Words to Look For

Records may mention blacksmith, farrier or iron worker. Sometimes the words are more general: artisan, laborer, farmer. Copy them all. Even the ones that seem to weaken the idea.

A farmer great-grandfather does not erase an iron surname. Maybe the link is older. Maybe it belongs to a side branch. Maybe the surname had already become fixed when the records you have begin. It happens often.

A Trace to Keep, Not Force

Iron surnames are interesting because they bring the family back into a physical place. A workshop. A road. People coming in and out. Work done by hand. But doubt needs room too.

If records confirm the trail, the story gains weight. If they do not, the surname is still worth keeping as a clue. Not everything can be solved. Sometimes good research means not inventing what is missing.

If one of these surnames appears in your family, I would not begin with the grand history of iron. I would begin with small records. A marriage where the groom is called a blacksmith. A baptism with a witness from the same working world. A contract, if you are lucky enough to find one. Even a road or a house near a workshop may say something.

Ferrari is very widespread, so it needs caution. Ferraro may look more transparent, but records still matter. Ferrero and Ferraris can point toward different areas and stories. The sound is close. The families are not always close.

Good research here accepts partial answers too. Maybe you find a blacksmith. Maybe not. Maybe you find only farmers with that surname. That is not a failure: the origin may simply be older than the records you are reading.

It can also help to look at the people around the family. Records do not contain only births, marriages and deaths. There are godparents, witnesses, neighbors, sometimes declarants. If certain names return near the same family, mark it. Not to build kinship too quickly, but to understand the setting.

The world of iron was not isolated. There were people who worked in the shop, people who brought material, people who bought things, people who had tools repaired. In a small community these relations could leave indirect traces. Maybe you never find the record that says “blacksmith”. But you may find a network of people and occupations that makes the idea less empty.

One thing should stay in mind: the surname may be older than the paper in front of you. A nineteenth-century record photographs a family at that moment; it does not always explain the origin of the name. That is why a farming family may carry a surname perhaps born from a different occupation. Life changes. The surname remains.

Small repeated clues are worth more than one beautiful guess. A workshop word, a witness, a nearby house, a son who keeps the same trade: none of these proves everything alone. Together, sometimes, they begin to sound like a real family setting.

Surnames with De, Di and D’ seem to speak of origin. Son of someone, family of someone, descent from a name. Sometimes that is the right trail. At other times the particle has simply become part of the surname, so stable that removing it changes everything.

The difficulty is exactly there. A particle can be old, mobile, misspelled, joined, separated, lost in an index. And when you work with Italian documents, especially between parish records, civil registration and emigration papers, these small differences matter.

Particles Do Not All Work the Same Way

Di Stefano immediately recalls the name Stefano. De Santis points toward a religious area. Di Santo seems to move in the same field, but it should not be confused with other forms too quickly.

The fact that two surnames have a particle does not make them related. And if a particle is missing in one record, it does not always mean it truly disappeared. The writer may have omitted it. Or it may be another family.

How to Search Without Losing Pieces

With these surnames, search more than one form. Separated, joined, with an apostrophe, without one. For Dellacqua, for example, see whether the word stays compact or is separated in records. For Lo Porto, check whether the article remains before the surname across generations.

But finding a similar form is not enough. You need to see whether the person is the same. A record can misspell the surname, yes. But if parents, age, spouse and place change too, it is no longer a variant. It is another trail.

The Modern Form Should Not Rule

Many people mentally correct old documents. They see a different spelling and immediately bring it back to today’s form. The temptation is understandable. Still, it is better to resist. Copy the document as it is, even when it is inconvenient.

Later, compare calmly. If the same family appears with two forms in three records, note it. If the particle changes only when the priest changes or when civil registration begins, mark that too. These shifts also tell the administrative story of the surname.

Small Words, Large Mistakes

A particle may look like a detail. It is not. In some cases it is the piece that lets you find a record; in others, it is the piece that leads you to the wrong family.

Treat it patiently. Search wide, connect narrowly. The possible forms may be many; your family line must remain one, built record after record.

There is also a very practical point: when you search digital archives, try separated and joined forms. Search Di Stefano, but also check versions without the space when the site allows it. Do the same with De Santis. Not because they are always true variants, but because indexes do not think like a person.

In older records the particle may look almost like a small service word. In other cases it is already fixed, a full part of the surname. You understand this by looking at several records from the same family. If the form stays stable, take it seriously. If it changes often, write everything down.

Do not correct too quickly. The modern form is useful for searching, but the form in the record shows how that name lived at that moment. Sometimes the best clue is exactly there.

In some families the particle stays stable for generations. In others it moves. One son appears with the full form, a brother with a shortened form, a grandchild with another spelling. Before calling it an error, look at the whole set. It happens more often than it seems.

This also matters when you compare emigrant branches. In records outside Italy the space may disappear, the apostrophe may fall, the particle may be treated almost like a middle name. It is not only a language question. It is offices, forms, and different ears.

To avoid losing the thread, keep every form you find. Then choose one main form to organize your search. Just one. Otherwise every check becomes tiring and you end up starting over each time.

When in doubt, search broadly but record narrowly. Use many spellings to find documents, then write down the form exactly as it appears. This keeps the search open without turning every spelling into the same surname too quickly.

Sooner or later it happens: you search a surname and find it written a little differently. A vowel changes. A double consonant disappears. A particle is joined to the next word. Or the surname looks almost right, but you are not sure.

In Italian archives, this is normal. Surnames have not always been as fixed as we imagine them today. It depended on who was writing, how he heard the name, the language of the register, haste, local habit. A priest wrote one way, a civil clerk another. Then digital indexes arrive, and they add another layer of possible mistakes.

A Good Variant Is Recognized by Context

It is not enough for two surnames to look alike. Costa, Costi and Costantini may share sounds, but they should not be joined at once. First look at the people.

Same father? Same mother? Compatible age? Same spouse? Same parish? If these things fit, the variant becomes believable. If they do not, stop. Similarity can help the search, but it can also lead it away.

Particles and Spaces

Particles are a small maze. Di Stefano, De Santis, Di Santo, Dellacqua: one space, one missing apostrophe or one joined form can change the search.

Search several versions, yes. Then return to the record. Do not immediately correct the document because the surname is written differently today. Transcribe what you see. Even if it looks awkward. Even if it looks wrong.

Singular, Plural, Suffixes

Endings are another trap. Rossi and Rosso look close. They are, in a way. But they may belong to different families. The same is true when a suffix appears, as in Rossetti or Rossini.

If the change happens inside the same family, in records that fit, keep it. If you find a similar form only because it appears in the same town, wait. Archives are full of surnames that look related and are not.

A Practical Way Not to Get Lost

I would keep a list of every form found. Exact form, date, place, type of record, connected person. A few columns, nothing elaborate. But write them well. After a few generations, that list can save you.

Variants are not just a nuisance. They are part of the surname’s history. They show how a family was heard, written, registered, sometimes misunderstood. Follow them patiently, and they can bring you closer to the right records.

A common case concerns indexes. The index says one thing, the record another. Do not trust only the transcribed line. Open the image, look at the handwriting, compare other words on the page. The same hand that seems to write Costi may, two lines later, make an a almost identical to an i. Boring details. Useful ones.

Surnames with an article or a particle need patience too. Lo Porto may appear with the space, without the space, sometimes with the article treated as something movable. That is not strange. The writer was thinking of a person, not of a modern form.

In the end the rule is simple, though it takes time. Do not look for a perfect spelling. Look for a recognizable family. If father, mother, spouse, place and dates stay together, the variant becomes stronger. If everything else is missing, it remains only a resemblance.

When you transcribe, leave a note about doubt. It does not need to be long. Something like: “uncertain reading”, “possible variant”, “check other records”. Ten days later you will be glad you did. Six months later even more. Memory lies kindly in this work: you think you remember well, but often you have only rebuilt the detail in your head.

If you work with several people from the same family, use the same rule every time. First the form written in the record. Then, in brackets or in a note, the modern form you will use for searching. This way you keep the document and you keep the search practical. A small compromise, but it prevents many mistakes.

Variants are not noise to clean away. They are part of the surname’s history. Sometimes they tell you about language, dialect, movement, habits of the person writing. They need order, not erasure.

One last habit helps: keep screenshots or image references when a spelling is doubtful. A typed note is useful, but the original page lets you return to the problem with fresh eyes. Sometimes the answer is visible only after you have read several pages written by the same hand.

A surname can feel like one single thing. You carry it, your father carried it, your grandfather before him. It is natural to imagine one origin somewhere, one first ancestor, one line that later spread out.

Sometimes that is true. Very often it is not. The same surname can arise in different places, for different reasons, without the families having any recent connection. This is not strange. It is fairly normal, especially when a surname comes from common words, nicknames, personal traits or places.

Simple Words, Many Possibilities

Gentile, Forte, Buono, Piccolo. These are words that could describe a person. A quality, a look, a way others called someone. And because everyone understood them, they could become surnames more than once.

A Forte family in one village is not automatically related to another Forte family elsewhere. It may be. But you need to see how. You need the bridge made by records.

When the Name Sounds Beautiful

Surnames such as Fiore, Paradisi or Salimbeni invite storytelling. They seem already full of meaning. That is exactly where it helps to slow down.

An evocative surname may come from devotion, a wish, a nickname, local usage, even from a phrase we no longer recognize. If we invent too much, we lose the trail. Better to leave the surname a little open and let records speak.

Same Form, Separate Families

Many surnames became fixed when communities were small and fairly closed. In two distant villages, the same word could be used to distinguish two different people. No contact. No visible common ancestor. Just the same mechanism.

This can happen even with surnames that look rare. Rarity helps, of course, but it does not solve the question. If two lines do not meet in records, they remain two lines. Maybe one day they will connect. Maybe not.

Variants or Coincidences?

Nearby forms are another problem. One letter changes, an ending shifts, a double consonant appears or disappears. It may be a variant. It may be another family. The difference is not in the word alone, but in the people around the word.

If only the spelling changes while wife, father, mother, age, occupation and place still match, the variant is believable. If everything else changes too, stop. A suspended trail is better than a wrong connection.

The Safest Way

Start from your family. Not from the surname in general. Rebuild the line, town by town, record by record. Only after that compare other families with the same name.

It is slower, but it works. The surname is a good compass, not a finished map. It can point in the right direction; it can also lead you toward families that are not yours. Records are there to show the difference.

This happens often even with surnames that seem to explain themselves. Fabbri points toward an occupation. Dellacqua suggests a place, a spring, perhaps a wet area. Rossi points toward a nickname. All of that can help, but it is not enough to say there was only one origin.

In one town the name may come from work. In another from a nickname. Somewhere else from a house, a small locality, or a dialect form that is no longer familiar. The surname is not the problem. The problem is explaining it too soon.

It helps to keep two lists, even in a simple notebook. One for your proven line. One for possible appearances. The first should contain only people you can document. The second can hold clues. This way you lose nothing, but you do not mix everything together.

The same caution applies when a family explanation has been passed down. “They came from there”, “they did that work”, “the name came from a nickname”. Family stories should not be thrown away. That would be a mistake. But they should not be treated as records either. They are memories, sometimes precise, sometimes mixed.

Use them like a lamp: they light part of the road, not the whole road. If the story mentions an occupation, look for that occupation in records. If it mentions a move, look for the first record in the new place and the last one in the old place. If it mentions an important family, check slowly. Many family trees break exactly where a story feels too convenient.

Short Answer, With a Catch

No: two families with the same surname are not necessarily related. It may feel likely, especially when the surname is uncommon or when both families come from the same area. But in archives, the surname alone is not enough.

You need a chain. One record leading to a father, then to a grandfather, then to another marriage, then to a baptism. Step by step. If both lines reach the same couple, good: the connection is there. If they do not, the surname remains a clue, not a relationship.

Same Town, Same Surname

When two families live in the same town, the trail deserves attention. Surnames such as Locatelli or Trevisan, when they appear several times in one place, may suggest nearby branches. Still, keep your feet on the ground.

Several families with the same surname could live in one town. Maybe they were distantly related. Maybe not. Sometimes they married into each other. Sometimes they lived in different districts and had little to do with one another. You understand it only by reading the records one by one.

I would keep the lines separate until they truly meet. Two trees, two folders, two paths. Then, if witnesses return, if parents match, if a house or parish repeats, you can begin to think about a connection.

Common Surnames Need More Caution

With surnames such as Russo, Colombo, Esposito or Lombardi, the risk of joining the wrong people is high. These surnames can appear in many places and in completely independent families.

Here the dull details matter. Age. Occupation. The mother’s name, not only the father’s. Hamlet. Witnesses. A nickname written on the side. A signature. The same house appearing again. Small things, yes, but they often prevent a large mistake.

Similar Names Can Mislead

The problem grows when surnames are not identical, only close. Santoro and Santini may recall a similar religious area. Rinaldi and Rinaldo may share a personal-name root. Interesting, of course. Still not genealogy.

A real variant appears when the same person is found with two forms in records that fit. Same wife, same parents, about the same age, same place. Without that, do not merge the families. Leave a note: possible connection. Nothing more.

A Better Question

In the end, the question is not “do we have the same surname?” The question is plainer and harder: can I show the path that joins these two people?

If the path exists, records will show it. If it is missing, forcing it will not help. The surname may have brought you close to a good trail. It may have shown you families from the same town, similar branches, parallel stories. That is useful too. But kinship, in archives, means a written connection. Not resemblance.

There is also a smaller question, and it often matters: do the two families really meet in the records? Not in family talk, not in a guess. In records. A godparent who returns, a marriage witness, a nearby house, an occupation repeated in the same small area. Plain details. Still, they often help more than a neat theory.

Take a surname like Bianchi. It is common, broad, found in many places. The surname alone says very little. With Postiglioni, the field feels narrower, but it is still not proof. One family may have moved. Another may have a separate story. The shared name starts the search; it does not finish it.

I would write things down in a dry way: year, town, parish, parents, occupation, witnesses. No decoration. After a few records, real repetitions begin to show. Sometimes kinship comes closer. Sometimes it disappears. That is part of the work too.

Another useful check is given names. If the same first names return in two families, it is not proof, but it can help. Especially when the names are less common, or when they follow a family order: grandfather, then grandson, then another grandson. Weak signals by themselves. Stronger when they stand beside the right records.

It is also worth looking at what is missing. If a family seems to disappear from one town and, a few years later, a family with the same surname appears in the next town, the trail deserves attention. Not a conclusion. A trail. The difference matters.

Some surnames seem to point to a place. Not a vague idea of origin, but a spot in space: a house, a square, a church, a bridge, a riverbank. Genealogy often begins like this, with a name that seems to say: look there.

The trouble is that “there” is not always easy to find. A district name may have changed. A house may have disappeared. The family may have moved. The surname may have begun in one place and then stayed with people who had lived elsewhere for generations.

The Small Geography

Villa, Piazza, Chiesa: these surnames bring you inside the town. You do not need to imagine large migrations at once. Sometimes a recognizable position was enough. The family by the square. The ones near the church. The people from the villa.

In communities where many people had the same given names, naming the place was useful. More useful than it seems today. If three men were called Antonio, saying which Antonio lived near the church could prevent confusion. Then that description could remain.

Bridges, Wells, Banks

Ponte, Pozzi and Riva carry very practical places. A bridge is crossed. A well is used. A bank marks an edge, a boundary, a point where the town meets water.

These surnames should be searched in maps as well as in birth and marriage records. Cadastral maps, district names, old residence notes. Sometimes one line in a notarial record says more than the surname itself: living in the district, near the bridge, close to the church. Small phrases. Useful ones.

Woods, Valleys, Roads

Bosco, Valle, Serra and Rota lead toward landscape. But landscape, in archives, is always local. There is no general valley. There is one valley, for one family, in one territory.

Two Valle families in distant areas may have no connection. Same word, different stories. First follow the family line. Then, if the place fits, the surname begins to speak more clearly.

When the Surname Seems to Say Where Someone Came From

Other surnames are more explicit. Genovese may suggest Genoa. Napolitano points toward Naples. Pugliese recalls Puglia, Calabrese recalls Calabria.

Here it is easy to rush. But an origin surname may arise when someone arrives in a new place. To the receiving community, he becomes the Genoese, the Neapolitan, the Apulian. The real starting point, though, must be found in records. Not in the name alone.

Where to Begin

I would begin with the oldest secure town. Then I would look at hamlets, parishes, maps, marriages with nearby families, witnesses who return. If the surname speaks of a place, see whether that place leaves other traces around the family.

A record may say only “born in this town,” and it can feel as if that is all. But a marriage may add the hamlet. A cadastral record may show a house. A notarial deed may name land near a road or a stream. You have to put together small pieces, even untidy ones. Research on place names is often made of details like these.

Short movements matter too. A family can move only a few kilometers and enter another parish without changing its world completely. In those cases the surname remains the same, but the context shifts just enough to confuse searches made only by town name.

Do not trust modern place names too quickly either. A hamlet may have been absorbed, a parish may have changed its boundaries, a road may have taken a new name. If a surname seems geographic, search for the territory as it existed then, not only as it appears on a map today.

Marriages matter as well. They often show whether a family was truly rooted in one spot or already moving. A bride from a nearby village, a witness who returns several times, a godparent with the same surname in another district: small things, but they lead somewhere.

Sometimes it does. Sometimes it does not. But even when you do not find the exact place at once, the surname pushes you toward something useful: seeing the family not as a list of names, but as people who lived among streets, houses, fields and boundaries.

That already changes the way you look. The surname stops being only a word and returns to an inhabited place.

Some surnames make sense almost before you think about them. Sartori, for instance. Or Fabbri. Or Fornari. These words still carry something practical: cloth, iron, bread, hands at work.

Then you go into the archives, open a birth record, a marriage record, a parish register, and things refuse to stay where you wanted to put them. The surname seems to speak of a trade, but the man in the record may be a farmer. His father too. His grandfather as well. So what then? It does not mean the surname is wrong. It may simply be older than the part of the family story you can see.

A trade may have named a family long before. It may have belonged to one branch. It may have turned into a nickname, then a surname, then plain inheritance.

The Tailor Is Not Always in the Record

Sartori points straight to the tailor. That is natural. In a town, the tailor mattered: clothes to repair, cloth to cut, wedding clothes, shirts, jackets, garments made for being seen properly. This was not a distant trade. It was there, in daily life.

But if a Sartori family appears in a town and nineteenth-century records list laborers, masons or small landowners, you should not erase the link with the trade. Move it further back, or leave it open. Sometimes the records do not take you far enough to see when the name was formed.

With Capelli and Capello, the ground is less straight. A person’s hair? A hat? A nickname? A trade connected with clothing? It may be one thing, or another. Note it. Then check.

Iron: Here the Name Has Weight

Fabbri has a different sound. Sharper. It suggests a workshop, tools brought in for repair, animals to be shod, locks, carts. The blacksmith did not work only for himself. He worked for half the village, and for that reason he could become a recognizable figure.

Near this world we find Ferraro, Ferrero and Ferraris. Close, yes. The same, no. A Ferraro in one register, a Ferrero in another territory, a Ferraris in another branch: before joining them, you need a lot of paper, not just a shared root.

When the occupation appears in records, copy it as it is. Even when it seems ordinary. Blacksmith, farrier, farmer, laborer, landowner: dry words, often repeated, but they keep the research attached to real life.

Bread, Mills, Fields

Molinaro leads to the mill. And the mill was not just a machine. It was water, grain, turns, sacks, arguments, payments, families arriving from the fields. Fornari leads to the oven, another passing point. Bread, of course. But also waiting, news, small debts, habits.

Massari is less immediate. It may lead toward the countryside, land management, a rural role. Here it helps to keep the view wide: cadastral records, when they exist; family registers; marriages; repeated occupations. Not every surname gives you a ready-made scene. Sometimes it gives only a direction.

Papers, Duties, Local Respect

Not every trade leaves traces of iron or flour. Notari recalls papers, deeds, writing. Giudici points toward public duties, decisions, local authority, perhaps even just a way in which a family had been known.

A Notari family may have no notaries in the records you find. It happens. The surname may have formed earlier, much earlier, or taken its own path. With surnames, this is common: a word begins in one setting and keeps living after that setting has disappeared from view.

So, with an occupational surname, I would first look at three simple things: the oldest secure town, the occupations written in the records, and the people around the family. Witnesses. Godparents. Neighbors. Families returning in marriages. Repeated names.

If the same trade appears across two or three generations, mark it carefully. Not because it solves everything, but because it begins to give the story some weight. One thing is a surname that recalls iron; another is a grandfather listed as a blacksmith, a father as a farrier, and witnesses from the same working world.

The surname should not be ignored. But it should not do all the work by itself. Sometimes it confirms. Sometimes it denies. Sometimes it does something more interesting: it complicates the story.

Some Italian surnames were personal names before they became family names. A name spoken at home, written by a priest, repeated in a record, passed from father to son until, at some point, people began using it to identify the whole family.

This happens with Martini, Guidi and Giorgi. Today they look like ordinary surnames, fixed and familiar. Behind them, though, there is an older habit: identifying a person through a given name, often the name of a father, an ancestor or someone known in the village.

In archives, this is rarely neat. A name can become a family reference without one clear day when the surname is “born.” First it distinguishes someone. Then it is repeated. Then it remains.

The Name That Stays With the Family

Martini suggests Martino. Giorgi points toward Giorgio. Guidi recalls Guido, a name with a long history in Italy. So far, it sounds easy. But we should not imagine one single Martino, Giorgio or Guido from whom everyone descends.

The same given name could be used in different villages, families and centuries. A Martini family in one town may have no connection with another Martini family far away. The surname helps you ask a question. It does not let you skip the work.

Francesco, Filippo, Matteo: Names That Shift

Some surnames preserve very recognizable names, but not always in the forms we expect. Franceschi and Franchini can point toward the Francesco or Franco area. Filippi recalls Filippo. Mattei recalls Matteo.

In records, however, forms can move. A priest writes what he hears. A civil officer standardizes. An emigrant sees the surname adapted in another country. Keep every spelling you find, even the ones that look secondary. Sometimes a small variant leads back to the missing record.

When the Sound Feels Older

With Lamberti, Gherardi or Orlandini, the reader hears something less everyday. These surnames recall personal names that circulated in old, local forms, sometimes far from the way we think of given names now.

Here, patience helps. The meaning does not always appear at first sight. And it does not always need to. First follow the family: where it lived, whom it married, which given names repeat among the children, who appears as godparent or witness.

Given names can have a long memory inside families. If the same names return again and again in one line, note it. It does not decide everything, but it matters.

Suffixes, Diminutives, Local Forms

Simonetti, Gabrielli, Corsini, Marchetti: in these surnames the original name is not always bare and simple. There are suffixes, familiar forms, local adaptations. Very normal in Italian records.

The risk is to treat one form as just a “longer” version of another. It is not that simple. A suffix may have been a stable part of a surname for centuries. If you find Corsi and Corsini in the same area, note the closeness, of course. Then check. Parents, dates, spouses, houses, parish.

How to Use These Surnames

With surnames like these, I would always start from the record closest to you. Not from etymology. Etymology is interesting, but it comes later. First move backward: birth, marriage, death, then the parents’ marriage, baptisms when available, family certificates where they exist.

One detail worth keeping is the naming pattern among children. If Martino, Giorgio, Guido or Matteo returns again and again in one line, it does not automatically explain the surname, but it deserves a note. Families repeated names for affection, devotion and memory. Sometimes those repetitions help separate one branch from another when the surname is the same.

The opposite can happen too. If the surname looks very clear but that given name never returns in the family, do not panic. Given names change, fashions change, devotions change as well. The surname may have remained while everything around it moved.

Only when the line is solid does it make sense to ask what the surname may be telling you. Sometimes it confirms a naming tradition. Sometimes it opens a medieval trail. Sometimes it remains a good hypothesis without direct proof. That is fine. A surname born from an old name does not need to explain everything. It needs to help you look more carefully.

Even one extra record can change the reading.