De Martino Surname in Italy

The surname De Martino is primarily of Campanian origin, especially concentrated around Naples, but it is also widespread throughout Southern Italy and Lazio. All forms of the surname derive from the Latin personal name Martinus, documented as early as 1178 in sources like the Brescia Diplomatic Code. Variants such as Demartini, De Martini, and De Martinis have distinct historical distributions: Demartini is linked to the Genoa, Alessandria, and Turin areas; De Martini is found in regions including Genoa, Alessandria, Pavia, Milan, the lower Belluno area, and also in Cagliari; De Martinis occurs in the Abruzzo and Foggia provinces. Historical traces of De Martini appear in the 15th century in Asolo with Alvise de Martini, chancellor to Caterina Cornaro, and in the 16th century in Milan with the notary Jacomo de Martini.