Where does “Charlemagne” come from?

Charlemagne (Middle English) comes from Middle French Charlemagne, from Old French Carles li magnes, from Latin Carolus Magnus.

Ancestry of “Charlemagne”, step by step

Step	Language	Word	Meaning
1	Middle French	Charlemagne	—
2	Old French	Carles li magnes	—
3	Latin	Carolus Magnus	—

Charlemagne — Etymology, Origin & Word History | Etymology Explorer