Where does “llur” come from?

llur (Catalan) comes from Old Catalan lur, from Vulgar Latin *illūrum, from Latin illōrum, from Proto-Indo-European h₂él-.

llur (Catalan): their; theirs

Definitions

Step	Language	Word	Meaning
1	Old Catalan	lur	—
2	Vulgar Latin	*illūrum	—
3	Latin	illōrum	—
4	Proto-Indo-European	h₂él-	—

llur — Etymology, Origin & Word History | Etymology Explorer