Massy. A well-known Norman family, Macy, whence the name is derived, was seated near Coutances and Avranches, Normandy.
May. From De Mai, Normandy, 1180; De May, England, 1272. Maysville, Ky., named after John May.
Mayhew, for Mayo.
Mead, or Meade. The English form of De Prato, Normandy, 1180.
Menzies, or De Maners, or later in Scotland, Manners.
Mercer, Mercier; Normandy.
Merrill.
Miall, Miel, Mihell, Mighell (the last a mediæval form of Michael). Lower also derives Mitchell from Michael through the French form Michel.
Miles.