Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
SAINT
As described in historical dictionaries
Patronymica Britannica (1860)
C®' SAINT. A common prefix to surnames of Norman origin, as St. Aubyn, St. Amand, St. -Barbe, St. Clere, St. George, St. Germaine, St. John, St. Leger. Many places in Normandy, and elsewhere, had formerly no other name than that of the Saint to whom the Church was dedicated, and from such places these surnames have been derived.
Surname type: Status name
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English