Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
DUNLEVY
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Cor. Br. and Gaelic. Local) From Dun, a hill, ley, green, and vy, a river or stream--the green hills by the river. Dunlamh or Dunlavy, in Gaelic, signifies the strong-handed. Dunalamhas, mh having the sound of v, is the hill or castle of warriors.
Origin: Celtic
Region of origin: British Isles
Country of origin: Ireland
Religion of origin: Christian
Language of origin: Gaelic