Where does “આઉં” come from?

આઉં (Kachchi) comes from Sanskrit अहम्, from Proto-Indo-Aryan aźʰám, from Proto-Indo-Iranian aȷ́ʰám, from Proto-Indo-European éǵh₂ — I.

Ancestry of “આઉં”, step by step

StepLanguageWordMeaning
1Sanskritअहम्I
2Proto-Indo-AryanaźʰámI
3Proto-Indo-Iranianaȷ́ʰámI, we
4Proto-Indo-Europeanéǵh₂I
Every word from Proto-Indo-European éǵh₂ →Every word from Proto-Indo-Iranian aȷ́ʰám →Every word from Proto-Indo-Aryan aźʰám →