Where does “Lemoine” come from?

Lemoine (French) comes from French lé, from French moine, from Middle French moine, from Old French monie, from Latin monicus — sporadically attested in early Christian inscriptions from Gaul.

Ancestry of “Lemoine”, step by step

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

Every word from Latin monicus →Every word from Old French monie →Every word from Middle French moine →