Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
WILLIAMS
As described in historical dictionaries
Patronymica Britannica (1860)
WILLIAMS. See William. Owing to the numerousness of this name in the Principality, it stands third in the list of common surnames in England and AA''ales. Within a limited period the entries of births, deaths, and marriages, in the books of the Registrar- General were, for Smith, 33,557; for Jones, 33,341: and for Williams, 21,936.
Surname type: From name of parent
Origin: Celtic
Region of origin: British Isles
Country of origin: Wales
Religion of origin: Christian
Language of origin: Welsh