Where does “martes” come from?

martes (French) comes from French marte, from Middle French marte, from Old French martre, from Frankish *marþr.

martes (French): plural of marte

Definitions

Step	Language	Word	Meaning
1	French	marte	marten
2	Middle French	marte	—
3	Old French	martre	—
4	Frankish	*marþr	—

martes — Etymology, Origin & Word History | Etymology Explorer