Question: Who is the paternal grandfather of Muiredach Mac Murchado?
Sentence (from "Muiredach mac Brain (died 818)"): In 795 his father, Bran, had been assassinated by his successor Fínsnechta Cethardec mac Cellaig( died 808) of the Uí Dúnchada sept as a direct challenge to the high- king.
Relevant evidence: No