Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
SWIFT
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Local) A name given for swiftness in moving. It may be local, from Swift, a river of England.
Patronymica Britannica (1860)
SWIFT. From speed of foot. Swift and Swyft, as also Celer, are found in H.R.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Surname type: Nickname
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English