Marvin, Mervin, Mirfin, Mervyn, Murfin.—Bapt. "the son of Merfin" or "Mervyn" (Yong, iii. 154-6).  The Brittany form of this famous name was Merlin.  Miss Yonge says Mervyn is still in use in Wales as a font-name.  The story of "Mervyn Clytheroe" has made the name familiar to modern ears; cf. Dolphin, Turpin, or Halpin, the suffix in all three cases being -fin.  The Yorkshire form of the surname to-day is Murfin or Mirfin, practically the same as Mirfyn in the 14th century. (A Dictionary of English and Welsh Surnames, Bardsley, 1901).