Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
CLOWSER
As described in historical dictionaries
Patronymica Britannica (1860)
CLOWSER. The Scotch douse is a sluice or mill-dam. Hence Clowser may be " sluice-man " — probably a miller.
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English