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| MacGuicken | rare: Tyrone-Derry-Antrim. Ir. Mag Uiginn, for which see Mac Guigan but compare also Mac Guckian. |
| MacGuickian | rare: Belfast etc. Ir. Mag Uiginn. See Mac Guigan. |
| MacGuigan | numerous: Ulster generally, ecpecially Tyrone-Derry-Antrim. Also Louth etc. Ir. Mag Uiginn. Perhaps from uige, ingenuity; or, Uiginn, a Viking. Many variants. |
| MacQuiggan | rare: Belfast area. Ir. Mac Uiginn. See also Mac Guigan. |
| Mag Eocháin | Mac Guighan, MacGuigan: líonmhar: Doire & Tír Eoghain. Tá meascadh leis an gceann thuas agus tá an-chuid leagan gallda le Mag Uiginn, q.v., leis. MIF. |
Parishes where a McGuigan and a second surname married each other.
This list shows total McGuigan Roman Catholic marriages by county.
Click on the county to see detail.