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.