Tosti Surname in Italy

The surname Tosti is commonly found in Umbria, Abruzzo, and Lazio, and in some instances may originate from the place name Campotosto (AQ). It may also trace back to the Gallic name Tosto (Tostonis), historically recorded in medieval sources such as Saxo Grammaticus' writings from the 12th century, which recount a figure named Tosto in northern Europe. Alternatively, the surname often derives from a nickname highlighting the resolute or tough nature of an ancestor. In Calabria, the name appears as early as the 15th century, exemplified by Cola Antonio de Caroleis, known as Cola Tosti, who led resistance against the Aragonese. The related surname Tosto is Sicilian, stemming from the dialectal word 'tostu,' meaning tough or bold, reinforcing the connection to a character trait of firmness.