Where does “í” come from?

í (Irish) comes from Irish sí, from Old Irish sí, from Proto-Celtic sī, from Proto-Indo-European sih₂, from Proto-Indo-European -ih₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

í (Irish): she, her; it; Alternative form of uí

Definitions

  1. she, her; it; Alternative form of uí

Ancestry of “í”, step by step

í traces back through two separate lines of ancestry.

via Irish sí

StepLanguageWordMeaning
1Irishsífairy mound, tumulus; she; it
2Old Irishsíshe; it; Alternative spelling of síi
3Proto-Celticsīshe
4Proto-Indo-Europeansih₂she
5Proto-Indo-European-ih₂Feminizes athematic nominal stems
6Proto-Indo-European-h₂Creates collective nouns, which refer to groups...

via Proto-Celtic īwos

StepLanguageWordMeaning
1Proto-Celticīwosyew
2Proto-Indo-European*h₁eyHw-yew
Every word from Proto-Indo-European -h₂ →Every word from Proto-Indo-European -ih₂ →Every word from Proto-Indo-European sih₂ →