Where does “Oncescu” come from?

Oncescu (Romanian) comes from Romanian Oancea, from Romanian -ă, from Latin illa, from Latin ille, from Latin olle, from Proto-Italic *olnos — that.

Ancestry of “Oncescu”, step by step

StepLanguageWordMeaning
1RomanianOancea—
2Romanian-ăForms certain female equivalent nouns
3Latinillanominative feminine singular of ille; nominative...
4Latinillethat; those; "; demonstrative pronoun "; that...
5LatinolleArchaic form of ille
6Proto-Italic*olnosthat
Every word from Proto-Italic *olnos →Every word from Latin olle →Every word from Latin ille →