Conall Corc (‘the purple’) , a legendary figure, is represented as a principal ancestor of the dynasties of the Éoganachta and is a central character in the origin story of the kingship of Cashel. The traditions surrounding him are widely discussed. According to the pre-Norman genealogies, his father was Luigthech, a great-grandson of Éogan Már (qv), the eponymous ancestor of the Éoganachta, while his mother was Bolce Ben Bretnach, a British female satirist. Conall Corc is synchronised with Niall Noígiallach (qv) through the device of representing his aunt, Mongfhind daughter of Fidach, as Niall's stepmother. The claim that, after a sojourn in Scotland, Conall returned to Ireland and discovered Cashel through an angelic vision may indeed suggest that the premier kingship of Munster was Christian in origin. An aside in the law tract ‘Córus Béscnai’, moreover, maintains that Conall Corc was the first king to bow before St Patrick (qv).
The story of Conall, as developed in later medieval genealogies, has him married to Aímend (or Óebfhinn) daughter of Óengus Bolg, whose dynasty of Corco Loígde provided early rulers of Munster. Aímend is credited with a dream which, in effect, prophesies that the sovereignty of Munster will rest with the lineage of their son Nad-fraích, from whom Éoganacht Chaisil claimed descent.