Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
BARRY
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Local) From the Barry Islands in Glamorganshire, Wales; so called, says Bailey, from Baruch, a devout man who was interred there.
Patronymica Britannica (1860)
BARRY. In some instances from the "Welsh ab Harry, the son of Henry ; but the Barrysof Eoclaveston, co. Notts., claim to be descended from Godfridus, who floiu-ished at Teversal, in that shire, temp. "Will. I. In the H.R. the surname appears without a prefix. There is a parish of Barry in co. Forfar.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Surname type: From given name or forename
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English