For background on how the map was made (and its flaws), see the relevant blog entry.
| Gargan | fairly numerous: Midlands etc. Ir. Ó Geargáin, gearg = fierce. Originally of Breifne and also occurring as Mac Geargáin. |
| Kirgan | Very rare: Antrim. |
| Mac Ciaragáin | Mac Kergan: annamh: Aontraim. Níltear cinnte faoin leagan Gaelach seo. |
| MacGurgan | fairly rare: Armagh-Tyrone etc. Ir. Mac Dhuarcáin, duarcán, a gloomy person. See also Durcan and Durkin. |
| MacKergan | rare: Antrim. Ir. ? Mac Ciaragáin. See Kerrigan. |
DEDs where McGurgan and a second surname are found together
This list shows total 1901 McGurgan households by county.
Click on the county to see detail.
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