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| MacAslan | Very rare: Belfast. Ir. ? Mac Caisealáin. See Mac Causland. |
| MacAusland | rare: Down-Tyrone. See Mac Causland. |
| MacCausland | numerous: E Ulster, Tyrone-Donegal etc. Ir. Mac Caisealáin (SGA), from caiseal, a stone fort. However, this name is also Scottish and Black quotes one Absolon of the Buchanan country as origin. Macauslan was long associated with Dumbarton. SS. |
Parishes where McCasland and a second surname are both baptised.
This list shows total McCasland Roman Catholic baptisms by county.
Click on the county to see detail.