Where does “j'ai” come from?

j'ai (French) comes from French je, from Middle French je, from Old French je, from Vulgar Latin eo, from Latin egō, from Proto-Italic egō, from Proto-Indo-European éǵh₂ — I.

j'ai (French): I've, I have; compound of

Definitions

I've, I have; compound of

Ancestry of “j'ai”, step by step

Step	Language	Word	Meaning
1	French	je	I
2	Middle French	je	Alternative form of ie
3	Old French	je	I
4	Vulgar Latin	eo	I go, I move; I advance, I proceed, I progress; I...
5	Latin	egō	I; first person singular personal pronoun, nominative case
6	Proto-Italic	egō	I
7	Proto-Indo-European	éǵh₂	I

Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Italic egō →Every word from Latin egō →