Where does “Գայանե” come from?

Գայանե (Armenian) comes from Old Armenian Գայիանէ, from Latin Gaianus, from Latin gaius, from Proto-Italic *Gāwjos, from Proto-Indo-European geh₂w- — to rejoice.

Ancestry of “Գայանե”, step by step

Step	Language	Word	Meaning
1	Old Armenian	Գայիանէ	—
2	Latin	Gaianus	—
3	Latin	gaius	—
4	Proto-Italic	*Gāwjos	—
5	Proto-Indo-European	geh₂w-	to rejoice

Every word from Proto-Indo-European geh₂w- →