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| Gilfillan | Quite numerous: Derry, Down etc. Ir. Mac Giolla Fhaoláin. For derivation see Phelan. In this case the name is primarily Scottish, being synonymous with MacClelland, a widespread name both in Ulster and Scotland. This name also applied to a sept of Uí Fiachrach (Sligo) but is now very rare. SI & SGG. |
Parishes where a Kilfillan and a second surname married each other.