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| Mac Mathghamhna | Mac Mahon: an-líonmhar: an Clár-Luimneach-Tiobraid Árann- Ciarraí agus Muineachán. Freagraíonn an dáileadh sa leis an dá chlann stairiúla: (1) an dream i dTuathmhumhain a bhí suite i gCorca Bascinn agus a shíolraigh ó Mhathúin, gar-mhac le Brian Bóroimhe; (2) clann Oirghialla a bhí cumhachtach sa dúiche sin agus gur cuireadh a dtaoiseach deireannach chun báis i Londain i 1644. Chuaidh cuid acu ar an Mór-Roinn tar éis treascairt an 17 céad agus díobh san do b'ea Patrick Mac Mahon (1808-1893), Uachtarán na Fraince agus saighdiúir céimiúil. Brí: féach Ó Mathúna. IF. |
| MacMahon | Very numerous: Clare-Limerick-Tipperary-Kerry and Monaghan-Cavan-Louth. Ir. Mac Mathghamhna, "bear-calf". Mod. Mac Mathúna. Two septs: one of Thomond (Clare) and related to the O'Briens; the other of Oriel (Monaghan). SGG, IF, GPN. |
| Mahon | Very numerous: South East, Midlands, Ulster, Connacht. Ir. Ó Macháin (Ulster); Ó Mócháin (Connacht). This latter seems to give rise to most Mahons in the South.MIF. |
Parishes where a McMahan and a second surname married each other.
This list shows total McMahan Roman Catholic marriages by county.
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