Belisarius.

Borrowed from Byzantine Greek Βελισάριος (Belisários), of Paleo-Balkan origin. Given that Belisarius was born in Germaneia, a town on the borders of Thrace, the Romanian linguist Ioan I. Russu proposes a Thracian origin, analyzing it as a compound of *bel- (“shining, white; strong”), from Proto-Indo-European *bʰel- (“to shine, flash, burn”) or *bel- (“power, strength”), and *sara (“stream, river, flowing water”), from Proto-Indo-European *ser- (“to flow, run”). This latter element is attested in other Ancient Greek names of Thracian origin, such as Καμασαρύη (Kamasarúē), Μαιωσάρα (Maiōsára), and Μηδισάρσα (Mēdisársa).