Doria, originally de Auria (from de filiis Auriae), meaning "the sons of Auria", and then de Oria or d'Oria, is the name of an old and extremely wealthy Genoese family who played a major role in the history of the Republic of Genoa and in Italy, from the 12th century to the 16th century.
According to legend, a noble Genoese lady named Auria or Oria della Volta fell in love with a noble pilgrim who was going to Jerusalem for the First Crusade; his name was Arduino di Narbonne but their children were named after the mother—de Oria, the children of Oria. Arduino was a typical name of the Arduinici family of the Piemonte, some of whose members bore the title of Counts of Auriate; one might then speculate that one of the Arduinici of Auriate gave origin to this family, which suddenly appears in history as a local major power in Liguria in the late 11th century.
Documentary evidence refers to two members of that family, Martino and Genuardo, in 1110; they are called filii Auriae (the sons or children of Oria). The Doria had fiefs in Sardinia from the 12th century to the 15th century, and also in Dolceacqua, Oneglia and Portofino, in the Riviera to the west of Genoa. Although uncommon, Doria is also known as a female first name.
Simon Doria lived in the late 12th century and was an admiral of the Genoese in the crusaders' assault against Saint Jean d'Acre. Percivalle Doria, who died in 1275 fighting for the Ghibelline, was an infamous warlord and a well-known Provençal poet. Also a poet, Simon Doria was podestà of Savona and Albenga. The brothers Oberto Doria and Lamba Doria were naval commanders and politicians: Oberto was Captain of the People in Genoa and led its naval forces in the victory of La Meloria against Pisa in 1284 while Lamba won a major battle against Venetian Andrea Dandolo at Curzola in 1298. Tedisio Doria (or Teodosio) financed the expedition of Vadino and Ugolino Vivaldi in 1291. Branca Doria is mentioned by Dante in the Divine Comedy because of his treacherous murder of Michele Zanche, his father-in-law, in 1275. Brancaleone Doria ruled the Giudicato of Arborea and nearly conquered the whole of Sardinia in the late fourteenth century.