Where does “bataylous” come from?

bataylous (Middle English) comes from Old French bataillos, from Old French bataille, from Latin battālia, from Latin battuō.

Ancestry of “bataylous”, step by step

Step	Language	Word	Meaning
1	Old French	bataillos	—
2	Old French	bataille	battle
3	Latin	battālia	—
4	Latin	battuō	—

bataylous — Etymology, Origin & Word History | Etymology Explorer