Mitchell

masc. proper name, also the name of an archangel, from Late Latin Michael (source of French Michel, Spanish Miguel), from Greek Mikhael, from Hebrew Mikha-el, literally "Who is like God?" The modern form of the name was a learned form in Middle English, where the common form was Michel (also Mihhal, Mighel, etc.), from Old French. The surname Mitchell might be from the old pronunciation of Michael or in some cases it might be from Old English mycel "big."

"great, large; much, abundant; a great deal," a dialectal survival of Old English micel, mycel "great, intense, big, long, much, many," from Proto-Germanic *mekilaz (source also of Old Saxon mikil, Old Norse mikill, Old High German mihhil, Gothic mikils), from PIE root *meg- "great." Its main modern form is much (q.v.); the common Middle English form was muchel. The phonetic development of the dialectal survival is obscure and might reflect Old Norse influence. Related: Mickleness. Middle English had muchel-what (pron.) "many various things."