The UàFiachrach Muaidhe were a branch of the UàFiachrach dynasty of the Connachta in medieval Ireland. They were centred on the Moy River valley of modern-day County Mayo, Ireland. At its largest extent, their territory, TÃÂr FhÃÂacrach Múaidhe (now in County Sligo) included the territories of Irrus Domnann and TÃÂr Amhlaidh now in County Mayo. This branch of the Ui Fiachrach was descended from Fiachnae, a brother of Ailill Molt (died 484), high king of Ireland. Later their chief sept was the àDubhda (O'Dowd), princes at Carn Amalgaidh, near Killala, County Mayo.
They provided some Kings of Connacht, including: