Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
MANSFIELD
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Local) From a town in Nottinghamshire, England, of the same name, so called from the Saxon manrian, to traffic, and field--a place of trade.
Patronymica Britannica (1860)
MANSFIELD. A parish in co. Nottingham, the ancient abode of the family, temp. Henry II. Some families derive themselves from a German source.
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