Where does “Gennaro” come from?

Gennaro is an Italian given name derived from Latin Ianuarius, the first month of the Roman calendar named for the god Janus.

Ancestry of “Gennaro”, step by step

Step	Language	Word	Meaning
1	Italian	Gennaro	—
2	Latin	iānuārius	—
3	Latin	-ārius	—
4	Proto-Italic	*-āzios	—

Gennaro — Etymology, Origin & Word History | Etymology Explorer