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| Mac Maoilín | Mac Millen: féach Mac Maoláin. |
| Mac Maoláin | Mac Mullen: an-líonmhar: Ulaidh, Connachta thuaidh, Laighin thuaidh. Tá an sloinne seo go láidir san oir-tuaisceart - rud a fhágann gur cosúil go bhfuil an sloinne Albanach Mac Millan measctha leis an ndream dúchasach. Tá Mac Millan féin líonmhar sa Dún agus Aontroim. Bhí siad lámh le Áth Cliath sa 12 céad. |
| MacMullan | Very numerous: Ulster generally, N Connacht, N Leinster. Ir. Mac Maoláin, a dimin. of maol, bald or tonsured. The name is indigenous but also a variant of the Scottish Mac Millan to which must be attributed many of those in the North East. |
| Mollan | rare: scattered. Variants of Mullan, q.v. |
| Mullan | Very numerous: Ulster generally etc. Ir. Ó Maoláin, dimin. of maol, bald, blunt. The most important sept was in Derry. See also Mullen and Mullin(s). |
| Mullane | numerous: W Limerick-Cork etc. Ir. Ó Maoláin. A locally-based name synonymous with Mullan, Mullen, Mullins, q.v. |
| Mullen | Very numerous: all areas, remarkably even distribution. Mullen is predominent in the North, Mullins in the South. Ir. Ó Maoláin. Septs existed in Galway and Derry. It must be noted that an English name Mullins also exists and is surely present. |
Parishes where a McMullan and a second surname married each other.
This list shows total McMullan Roman Catholic marriages by county.
Click on the county to see detail.