MacDermott The name MacDermott/McDermott is derived from the Irish MacDiarmada. This in turn is derived from the peronal name Diarmuid. The family is descendant from an original Diarmuid of Roscommon. The family seat was on MacDermotts Island near Boyle. |  |
MacDonagh From the Irish donnchadh or brown one. Originally common in both Cork and Sligo the name gradually disappeared from the southern county but remains strong in the west. |  |
MacGillicuddy The name MacGillicuddy is a relatively recent one and as a result the origin is very precisely known. Originally from the Irish meaning son of the devotee of St. Mochuda or Mac Giolla Mochuda the family was actually a branch of the OSullivans of Kerry. When Ailinn OSullivan became bishop of Lismore he started devotion to St Mochuda - a fellow Kerryman of the 7th Century. Devotion to this saint became strong among the OSullivans until, in the 15th Century Conor took the name officially. |  |
MacGorman The name Gorman derives from the Irish word for blue (gorm) Storngly based in Laois until the Norman invasion the clan moved to Clare and Monaghan and then eventually to Tipperary. Variations include O prefix as well as just Gorman which remains popular in Tipperary. |  |
MacNamara Originating in County Clare the name MacNamara is itself shared with the surrounding coutry of Connemara deriving from Mac Conmara. Still strongest in Clare and Limerick where the family held power for almost 600 years until the 17th Century. |  |
Mahony A traditional Cork name, the Mahony/OMahony clan retained power around Bandon until the 17th Century. The name deroves from the Irish word for bear, Mathghamhan |  |
Malone Originally a branch of the OConnors the Malone family has a long relationship with the Abbey of Clonmacnoise, providing a number of Bishops and abbots. The name itself is an Anglicisation of O Maoil Eoin or son of a devotee of St John. |  |
McCann Associated principally with the northern counties of Antrim, Tyrone, and Armagh the name derives from Mac Anna or son of Annadh Descendant from Niall of the Nine Hostages in the fifth century. |  |
McDermott The name MacDermott/McDermott is derived from the Irish MacDiarmada. This in turn is derived from the personal name Diarmuid. The family is descendant from an original Diarmuid of Roscommon. The family seat was on MacDermotts Island near Boyle. | |
McDonagh From the Irish donnchadh meaning brown one. Originally common in both Cork and Sligo the name gradually disappeared from the southern county but remains strong in the west. | |
McGillicuddy The name MacGillicuddy is a relatively recent one and as a result the origin is very precisely known. Originally from the Irish meaning son of the devotee of St. Mochuda or Mac Giolla Mochuda, the family was actually a branch of the OSullivans of Kerry. When Ailinn OSullivan became bishop of Lismore he started devotion to St Mochuda - a fellow Kerryman of the 7th Century. Devotion to this saint became strong among the OSullivans until, in the 15th Century Conor took the name officially. | |
McNamara Originating in County Clare the name McNamara is itself shared with the surrounding coutry of Connemara, deriving from Mac Conmara Still strongest in Clare and Limerick where the family held power for almost 600 years until the 17th Century. | |