| Heffernan | Very numerous: all provinces except Ulster. Ir. Ó h-Ifearnáin, Ifearnán, an early personal name. The sept was located in Owneybeg, E Limerick. SGG. |
| Ó h-Ifearnáin | Heffernan: an-líonmhar, seachas Cúige Uladh. Clann a suite in Uaithne Bheag, idir Luimneach agus Tiobraid Árann, go dtí an 14 céad ach tá a lán díobh timpeall na dúiche seo i gcónaí. Annsan a bhí an file Liam Dall Ó h-Ifearnáin (1720-60). Féach Ó h-Earnáin, leis. |
DEDs where Heffenan and a second surname are found together
This list shows total 1901 Heffenan households by county.
Click on the county to see detail.
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