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| Mailey | Quite numerous: Derry-Antrim. Ir. Ó Máille. See O'Malley. |
| Malee | rare: Mayo. Probably Ir. Ó Maol Aoidh (servant of Hugh), but see Molloy. |
| Maley | Very rare: Downpatrick (Down). Ir. Ó Máille. See Malley. |
| Malley | rare: Ulster, Dublin etc. Ir. Ó Máille. See O'Malley. |
| Mallie | rare: Armagh etc. Ir. Ó Máille. Variant of O'Malley, q.v. |
| Ó Máille | rare: Galway etc. Ir.Lang. See O'Malley. |
| Ó Máille | O'Malley, Melia: líonmhar gach aird: Connachta agus Laighin thuaidh go sonrach. Bhí clann iomráiteach i Maigh Eo - díobh san Gráinne Mhaol (1530-1600), ban-taoiseach agus mairnéalach. Bhí clann eile láimh le Cathair Luimnigh. |
| O'Malley | numerous: all areas, especially Connacht and N Munster. Ir. Ó Máille. Perhaps from Celtic maglios, a chief. A noted sept of Mayo, associated with seafaring, and another in Thomond near Limerick City. IF. |
Parishes where O'Malley and a second surname are both baptised.
This list shows total O'Malley Roman Catholic baptisms by county.
Click on the county to see detail.