| Ó Réagáin | Regan: fuaimniú Muimhneach ar Ó Riagáin, q.v. |
| Ó Riagáin | rare: Dublin etc. Ir.Lang. See O'Regan. |
| Ó Riagáin | (O')Regan: an-líonmhar - i gCorcaigh ach go h-áirithe. Ó thaobh staire de, bhí trí chlann: an ceann sa Mhí, scaipeadh aimsir an Ionraidh í ach d'fhan cuid acu i Laois. Clann eile i dTuathmhumhain a shíolraigh ó Riagán, nia le Brian Bóroimhe. Bhí an triú dream i gCairbre, iarthar Chorcaí, mar bhain siad leis na Carthaigh. Réagán an fuaimniú sa Mhumhain agus is mar sin, is dócha, a fuair Ronald Reagan, Uachtarán SAM, a shloinne. Fréamh: díspeagadh ar "rí". SGG & IF. |
| O'Reagan | Very rare: Kilfinnane (Limerick). Ir. Ó Riagáin. See O'Regan. |
| O'Regan | Very numerous: mainly Cork. Ir. Ó Riagáin (perhaps dimin. of rí, a king). A sept of Meath and one of the "Tribes of Tara", who were dispersed at the Invasion. There were other septs in Thomond and Cork. The pronounciation in Munster is Réagán, which would account for the name of President Ronald Reagan of USA. IF & SGG. |
| Reagan | Very rare: scattered. Ir. Ó Riagáin. See O'Reagan. |
| Regan | numerous: all areas, especially Roscommon-Sligo-Mayo. Ir. Ó Riagáin, dimin. of rí, a king. There were septs in Meath, Clare and Cork. Those of Meath were dispersed at the Invasion and some settled in Laois. See also O'Regan. IF. |
DEDs where Regan and a second surname are found together
This list shows total 1901 Regan households by county.
Click on the county to see detail.
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