Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
MONCKTON
As described in historical dictionaries
Patronymica Britannica (1860)
MONCKTON. This family are of great antiquity in co. York, and derive tlieir descent from Simon Monckton of Sloncktou, near Boroughbridge, which lordship his posterity enjoyed until it was made a nunnery in the year 1326, and called NuuMonckton. Courthope's Debrett.
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