Dallán mac Breasal, 5th king of Uí Maine, fl. 5th-century.
Biography
John O'Donovan remarked that "Conall Cas-ciabhach, i.e. of the curled tresses, was prince of Hy-Maine, twenty-two years, when he was slain. He was brother of Fiachra Finn."
References
Dallán mac Breasal Wikipedia(Text) CC BY-SA