Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
DUNKIN
As described in historical dictionaries
Patronymica Britannica (1860)
DUNKIN. An Eng. corruption of the Scottish Duncan. The Duncans ' came south ' at an early date, for one Donecan had got as far as Somersetshire at the making of Domesd. In the XIV. cent, it was often written Dunkau and Duncon in English records.
Surname type: Diminutive
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English