Where does “lequel” come from?

lequel (French) comes from French quel, from Middle French quel, from Old French quel, from Latin quālis, from Proto-Indo-European kʷō-.

lequel (French): which, that, whom; which one

Definitions

lequel traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	French	quel	which; what
2	Middle French	quel	which
3	Old French	quel	which
4	Latin	quālis	of what kind, sort, description, nature; what kind of
5	Proto-Indo-European	kʷō-	—

Step	Language	Word	Meaning
1	French	lé	breadth, width; strip, length
2	French	moine	monk
3	Middle French	moine	monk
4	Old French	monie	monk
5	Latin	monicus	sporadically attested in early Christian inscriptions from Gaul