Where does “Enni” come from?

Enni (Finnish) comes from Finnish Eini, from Finnish Eino, from Old High German ein, from Proto-West Germanic ain, from Proto-Germanic ainaz, from Proto-Indo-European óynos — one; single.

Ancestry of “Enni”, step by step

Enni traces back through two separate lines of ancestry.

via Finnish Eini

StepLanguageWordMeaning
1FinnishEini
2FinnishEino
3Old High Germaneinone; only
4Proto-West Germanicainone
5Proto-Germanicainazone; some
6Proto-Indo-Europeanóynosone; single

via Estonian Henrika

StepLanguageWordMeaning
1EstonianHenrika
Every word from Proto-Indo-European óynosEvery word from Proto-Germanic ainazEvery word from Proto-West Germanic ain