Where does “Pârâul lui Vlad” come from?

Pârâul lui Vlad (Romanian) comes from Romanian lui, from Latin illūi, from Latin illī, from Latin ille, from Latin olle, from Proto-Italic *olnos — that.

Ancestry of “Pârâul lui Vlad”, step by step

Pârâul lui Vlad traces back through 3 separate lines of ancestry.

via Romanian lui

Step	Language	Word	Meaning
1	Romanian	lui	his; to him
2	Latin	illūi	him dative singular masculine; apparently also genitive
3	Latin	illī	found in
4	Latin	ille	that; those; "; demonstrative pronoun "; that...
5	Latin	olle	Archaic form of ille
6	Proto-Italic	*olnos	that

via Romanian Vlad

Step	Language	Word	Meaning
1	Romanian	Vlad	—
2	Romanian	Vladislav	—
3	Proto-Slavic	volděti	to rule
4	Proto-Balto-Slavic	walˀdā́ˀtei	—
5	Proto-Indo-European	h₂welh₁dʰh₁-	—
6	Proto-Indo-European	h₂welh₁-	to rule; strong, powerful; hair; wool

via Romanian pârâu

Step	Language	Word	Meaning
1	Romanian	pârâu	stream; creek; brook

Every word from Proto-Italic *olnos →