Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
KERR
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Gaelic, Welsh, and Cor. Br.) Kaer, a castle; figuratively, strong, valiant; car, dear, a kinsman, a friend; Danish, Kier, dear, lovely.
Patronymica Britannica (1860)
KERR. KER. See Carr.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic