出典:Wiktionary
The commune of France is from Old French Granville, Grandvilla, Grande Villa, Grandivilla, from grant (“grand”) + ville (“settlement”). The surname is of Norman baronial origin, from Grainville, a former commune in Normandy, from the given name Guarin + ville, meaning “Guarin's town”. Guarin ultimately derives from Proto-Germanic *warduz (“guard”).
Granville