McClintock is a surname of Scottish and Irish Gaelic origin deriving from an anglicization of a Gaelic name variously recorded as M'Ilandick, M'Illandag, M'Illandick, M'Lentick, McGellentak, Macilluntud, McClintoun, and Mac Illiuntaig from the 14th century onward. The name is found mostly in County Donegal. The surname "McClinton" is an anglicization of the same Gaelic name. . Notable people with the surname include: Anne McClintock (born 1954), feminist scholar in Zimbabwe. Barbara McClintock (1902–1992), American scientist who won the Nobel Prize for Medicine.
https://en.wikipedia.org/wiki/McClintock