Sebastiani Surname in Italy

The surname Sebastiani originates from the Byzantine given name Sebastianus, itself derived from the Greek Sebastos. Historically, several distinct branches are notable: in northern Marche regions, including the provinces of Pesaro and Ancona, with towns such as Fano, Pesaro, Mondavio, Senigallia, Castelleone di Suasa, Ancona, Serra de' Conti, Ostra Vetere, Jesi, and Sassoferrato. A significant cluster is centered in Rome and surrounding areas including Genazzano, Palestrina, Genzano di Roma, Anzio, along with the Latin district encompassing Latina and Terracina. Another documented line is present in Guardia Sanframondi, Benevento province. The surname is predominantly found in Central Italy, with smaller groups in the North and in Bari province. Sebastiani shares its etymological roots with related surnames like Sebastiano and Sebastianelli but differs in territorial distribution and family branches. Historical records attest to the use of the name since the 15th century in the Foggia area, with the formal establishment as a surname by the 1600s in Rimini.