Where does “quilte” come from?

quilte (Anglo-Norman) comes from Old French coilte, from Latin culcita, from Proto-Indo-European kʷel- — to turn.

Ancestry of “quilte”, step by step

Step	Language	Word	Meaning
1	Old French	coilte	cushion; quilt
2	Latin	culcita	mattress, pillow, cushion
3	Proto-Indo-European	kʷel-	to turn

quilte — Etymology, Origin & Word History | Etymology Explorer