Where does “Вениамин” come from?

Вениамин (Russian) comes from Byzantine Greek Βενιαμίν, from Hebrew בִּנְיָמִין.

Ancestry of “Вениамин”, step by step

Step	Language	Word	Meaning
1	Byzantine Greek	Βενιαμίν	—
2	Hebrew	בִּנְיָמִין	—

Вениамин — Etymology, Origin & Word History | Etymology Explorer