Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
LANDON
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
(origin: Cor. Br.) The inclosed hill or town, from Lan, an inclosure, and dun, a hill or town. Landen, a town of Belgium.
Patronymica Britannica (1860)
LANDON. A township in Northumberland.
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