An Cosnmhaidh Ua Dubhda

An Cosnmhaidh Ua Dubhda (died 1162) was the king of Ui Fiachrach Muaidhe.

His wife, Dubh Essa Bean Uí Dubhda, died in 1190.

• 1162. Cosnamhaigh Ua Dubhda, lord of Ui-Amhalghadha, was slain by his own tribe.

• http://www.ucc.ie/celt/published/T100005B/

• The History of Mayo, Hubert T. Knox, p. 379, 1908.
• 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.