Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
THORN
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Local) A town in England; a tree or bush armed with spines or sharp shoots. "Will at the Thorn."
Patronymica Britannica (1860)
THORN. TIIORNE. Parishes and places in cos. York, Somerset, and Northumberland. There are also many trivial localities so called, in many counties. In A-Sax. charters, tliorn-trees frequently occur as boundary-marks, which from the great longevity of the tree is quite natural ; and the word enters into the composition of numerous place-names. In medieval writings the surname Tlioru is latinized De Spineto, splnetum being equivalent to " a bushy place," or thicket of thorns and
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