Serboi

Kazimierz Moszyński derived the name from Indo-European *ser-, *serv-, meaning "guard, protect" (cognate of Latin servus), and originally, it may have meant "guardians of animals", that is "shepherds".

[5] The tribe was included on maps of the antique Sarmatia Asiatica as Serbi, Sirbi, in the Early modern period.

The Sarmatians were eventually decisively assimilated (e.g. Slavicisation) and absorbed by the Proto-Slavic population of Eastern Europe around the Early Medieval Age.

[2] Others believe that the tribe may in fact have been early Slavic, as noted by Lithuanian-American archaeologist Marija Gimbutas (1921–1994),[7] and others.

[10] In the 10th century, the Byzantine emperor Constantine VII Porphyrogennetos mentions in his book De Ceremoniis two tribes named Krevatades (Krevatas) and Sarban (Sarbani) located in the Caucasus near Alania.