|Killen||numerous: Ulster generally. Ir. Mac Coilin, from the Scots Gaelic first name Cailean which gives the popular Colin, much used by the Campbells. A family of galloglasses employed by the O'Donnells in 16 cent. See also Mac Callion.MIF.|
|Mac Coilín||Mac Killen, Cullen: líon beag: Ulaidh. Féach Mac Cailín.|
|MacKillen||fairly numerous: Antrim-Down etc. Scots Gaelic Mac Coilin, from Cailean or Colin, dimin. of Nicholas. Galloglasses from Argyle 15 cent. SI & SS.|
Parishes where McKillen and a second surname are found together
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