Sardo Surname in Italy

The surname Sardo and its variants Sardi, Sardone, and Sardoni originate from the ethnonym 'sardo', referring to people from Sardinia. The form Sardo is typically found in Campania, Sicily, Liguria, and Piedmont, while Sardi appears mainly in Liguria, Piedmont, Tuscany, and Lazio. Sardone has a significant presence in Apulia, especially in the Bari area, and in Basilicata, notably in Matera, with a smaller presence in Sicily. The rare surname Sardoni seems to have Roman origins and may derive directly or through augmentative forms from 'sardo'. These surnames likely indicate ancestral roots or connections to the island of Sardinia.