Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
CLARE
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Fr.) Clair, from the Latin Clarus, pure, renowned, illustrious.
Surname type: From given name or forename
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English