Where does “Indrei” come from?

Indrei (Romanian) comes from Hungarian Endre, from Hungarian -d, from Middle Welsh -nt — 3rd person plural verb ending.

Ancestry of “Indrei”, step by step

StepLanguageWordMeaning
1HungarianEndreAndrew
2Hungarian-dyour; Used in the second-person singular definite...
3Middle Welsh-nt3rd person plural verb ending
Every word from Middle Welsh -nt →Every word from Hungarian -d →Every word from Hungarian Endre →