Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
CLAIR
As described in historical dictionaries
Patronymica Britannica (1860)
SAINT CLAIR. SAINT CLERE.
Region of origin: Asia
Country of origin: India
Religion of origin: Sikh
Language of origin: Punjabi