Where does “Pîrvănoiu” come from?

Pîrvănoiu (Romanian) comes from Romanian Pârvan, from Bulgarian Първан, from Bulgarian пръв, from Old Church Slavonic прьвъ, from Proto-Slavic pьrvъ, from Proto-Balto-Slavic pírˀwas, from Proto-Indo-European pr̥h₂wós, from Proto-Indo-European per- — passed , crossed.

Ancestry of “Pîrvănoiu”, step by step

Step	Language	Word	Meaning
1	Romanian	Pârvan	—
2	Bulgarian	Първан	—
3	Bulgarian	пръв	first
4	Old Church Slavonic	прьвъ	first
5	Proto-Slavic	pьrvъ	first
6	Proto-Balto-Slavic	pírˀwas	—
7	Proto-Indo-European	pr̥h₂wós	first
8	Proto-Indo-European	per-	before, in front; first; to go through
9	Proto-Indo-European	pr̥tós	passed , crossed

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European pr̥h₂wós →