Where does “Keira” come from?

Keira (English) comes from Irish ciar, from Old Irish cíar, from Proto-Indo-European ḱēy(w)-.

Ancestry of “Keira”, step by step

StepLanguageWordMeaning
1Irishciarswarthy, dark
2Old Irishcíardark
3Proto-Indo-Europeanḱēy(w)-—

Words derived from “Keira”

Every word from Proto-Indo-European ḱēy(w)- →Every word from Old Irish cíar →Every word from Irish ciar →