Question: Who is the paternal grandfather of Sadb Ingen Chuinn?
Sentence (from "Conn of the Hundred Battles"): Conn Cétchathach ("of the Hundred Battles", pron.), son of Fedlimid Rechtmar, was, according to medieval Irish legendary and annalistic sources, a High King of Ireland, and the ancestor of the Connachta, and, through his descendant Niall Noígiallach, the Uí Néill dynasties, which dominated Ireland in the early Middle Ages, and their descendants.
Relevant evidence: Yes