Killough Family History
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Killough Name Meaning
Northern Irish variant of a Scottish surname, probably Killock, which is from the village of Killoch in Ayrshire. The possibility that it is a variant of Kelloch (see Kellogg) cannot be ruled out.
Source: Dictionary of American Family Names ©2013, Oxford University Press
Similar surnames: Kellough, Kellogg, Kimbrough, Gillund, Killings, Keough, Kilgour