De Marco Surname in Italy

The surname De Marco originates from the Latin nomen Marcius, belonging to a prominent Roman gens. It signified membership in the Marchi family. De Marco is widespread throughout Italy, particularly concentrated in Southern regions such as Calabria, Apulia, and Campania. Related variants exhibit more localized distributions: De Marchi is mainly found in Northern Italy, especially Veneto and Lazio, while De Marchis is characteristic of the area around Rome and Latina. Other derivatives like Demarchi and Demarchis are tied to specific areas—Piedmont and the Gorizia-Trieste zone respectively. The form Demarco appears to stem from the Bari area. Although sharing a common root, each variant reflects distinct geographic origins shaped by various regional settlements and migrations over time.