Where does “véllor” come from?

véllor (Old Catalan) comes from Latin vellor, from Latin vĕllus, from Proto-Indo-European h₂welh₁- — to rule; strong, powerful; hair; wool.

Ancestry of “véllor”, step by step

Step	Language	Word	Meaning
1	Latin	vellor	first-person singular present passive indicative...
2	Latin	vĕllus	the wool shorn from a sheep; fleece; wool
3	Proto-Indo-European	h₂welh₁-	to rule; strong, powerful; hair; wool