Donnchadh Ó Dubhda

Donnchadh is almost wholly known from Araile do fhlathaibh Ua nDubhda, which says of him:

• Donnchadh Ó Dubhda [came] with a fleet of fifty-six ships from Innse Gall and came ashore in Inis Raithin among Inse Modh in Umhall, and he seized his own land free of tribute from Cathal Crobhdearg Ua Conchobair.

Dubhaltach Mac Fhirbhisigh gives what appears to be his genealogy (265.2, pp. 598–99, volume I):

• Donnchadh Mór (mac Aodha m. Taithligh m. Aodha m. Muircheartaigh m. Aodha m. Taithligh m. Nell), trí mec les .i. Brían, Maolruanaidh, agus Muircheartach, ó ttaid Clann Chonchabhair/Donnchadh Mór (s. Aodh s. Taithleach s. Aodh s. Muircheartach s. Aodh s. Taithleach s. Niall) had three sons: Brian, Maol Ruanaidh, and Muircheartach, from whom are Clann Chonchabhair.

At 265.5 (pp. 600–601), Mac Fhirbhisigh gives the genealogy of another Donnchadh Mór, son of Taichleach O Dubhda, as having three sons; Donnchach Og, royal candidate of Ui Fhiachrach, Conchabhar, and Uilliam, bishop of Ceall Aladh (Kilalla), stating that the daughter of O Floinn was mother of those sons of Donnchadh Mor.

• Annals of the Four Masters

• The History of Mayo, Hubert T. Knox, p. 379, 1908.
• Genealach Ua fFiachrach Muaidhe, 263.8 (pp. 596–97), 264.5 (pp. 598–99); Araile do fhlathaibh Ua nDubhda/Some of the princes of Ui Dhubhda, pp. 676–681; Leabhar na nGenealach:The Great Book of Irish Genealogies, Dubhaltach Mac Fhirbhisigh (died 1671), eag. Nollaig Ó Muraíle, 2004–05, De Burca, Dublin.