Where does “Stănulescu” come from?

Stănulescu (Romanian) comes from Romanian -ul, from Old Romanian *-lu, from Latin illum, from Latin ille, from Latin olle, from Proto-Italic *olnos — that.

Ancestry of “Stănulescu”, step by step

Step	Language	Word	Meaning
1	Romanian	-ul	variant of -l
2	Old Romanian	*-lu	—
3	Latin	illum	accusative masculine singular of ille
4	Latin	ille	that; those; "; demonstrative pronoun "; that...
5	Latin	olle	Archaic form of ille
6	Proto-Italic	*olnos	that

Every word from Proto-Italic *olnos →Every word from Latin olle →Every word from Latin ille →