Where does “յանուն” come from?

յանուն (Old Armenian) comes from Old Armenian անուն, from Proto-Armenian anuwn, from Proto-Indo-European h₃néh₃mn.

Ancestry of “յանուն”, step by step

Step	Language	Word	Meaning
1	Old Armenian	անուն	name; renown, glory, reputation, honor, title;...
2	Proto-Armenian	anuwn	—
3	Proto-Indo-European	h₃néh₃mn	—

յանուն — Etymology, Origin & Word History | Etymology Explorer