Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
HOWELL
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Cor. Br.) From Houl, the sun; Greek, ??, Euhill, high, exalted.
Patronymica Britannica (1860)
AP HOWELL. (Welsh.) The son of Howell. Hence Powell.
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: Wales
Religion of origin: Christian
Language of origin: Welsh