Where does “a” come from?

a (Yola) comes from Middle English A, from Middle English I, from Old English iċ, from Proto-West Germanic ik, from Proto-Germanic *ek, from Proto-Indo-European éǵh₂ — I.

Ancestry of “a”, step by step

StepLanguageWordMeaning
1Middle EnglishA
2Middle EnglishII (first-person singular subject pronoun)
3Old EnglishI
4Proto-West GermanicikI
5Proto-Germanic*ek
6Proto-Indo-Europeanéǵh₂I

Words derived from “a

Every word from Proto-Indo-European éǵh₂Every word from Proto-Germanic *ekEvery word from Proto-West Germanic ik