Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
KEEN
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
Bold, eager, daring; bright, fair; or may be the same as Kean.
Patronymica Britannica (1860)
KEEN. KEENE. Perhaps sometimes from sharpness of disposition ; but sometimes probabl)' the Irish O'Kean, sans 0'. Both Kene and Le Kene occur in H.R.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Surname type: From given name or forename
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic