Sīrĭus (noun M) = σείριος:
* The dog-star, Sirius, Hyg. Astr. 3, 34; 2, 35; Verg. G. 4, 425; id. A. 3, 141; Tib. 1, 7, 21; Luc. 10, 211 al.—Adj.: ardor,of Sirius,Verg. A. 10, 273; Col. poët. 10, 289: vapor,Prud. Cath. 12, 22.

Personal name
Confirmed occurences in the Roman Empire:

• T. Flavius Sirius (eques), ref: I. Ankara (French, Mitchell) 51 | PIR ID14971