Prōteus | dissyl. (noun M) : (), , , = Πρωτεύς
* A sea-god who often changed his form; he was in the service of Neptune, and kept his sea-calves, Ov. M. 8, 731; 2, 9; id. A. A. 1, 761; Hor. C. 1, 2, 7; Verg. G. 4, 388; Ov. F. 1, 367: Protei columnae,i. e. the boundary of Egypt,Verg. A. 11, 262.— Transf., of a fickle person: Protea tenere,Hor. Ep. 1, 1, 90; of a cunning person,id. S. 2, 3, 71; cf. Amm. 29, 1, 39.

Male Personal name
Confirmed occurences in the Roman Empire:

• Aurelius Proteus (Masc), ref: IGR 1, 129 | PIR ID14775