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| Mullaghan | rare: Antrim etc. Ir. Ó Maolacháin, diminutive of maol, bald, abrupt. See also Mollaghan. |
| Mulligan | Very numerous: Mainly Ulster, Sligo-Mayo-Roscommon. Ir. Ó Maolagáin, from maol, abrupt. A sept of Donegal, displaced 17 cent. IF. |
Parishes where McMulligan and a second surname are both baptised.
This list shows total McMulligan Roman Catholic baptisms by county.
Click on the county to see detail.