As described in historical dictionaries

An Etymological Dictionary of Family and Christian Names (1857)

(origin: British and Welsh. Local) From ains, a spring, a river, and gwerth, a place, possession, or court. In the British and Gaelic, Aun, Ain, Au, Hain, Aon, and Avon, signify a river; the place or possession on the river.

Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.


Patronymica Britannica (1860)

AINSWORTH. A chnpelry in tlie parish of Middleton, near Manchester.

Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.


Surname type: Location or geographical feature

Origin: English

Region of origin: British Isles

Country of origin: England

Religion of origin: Christian

Language of origin: English

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