The Táin Bó Flidhais tells the tale of a punitive raid by them on one of the Gamhanraidh tribe who lived in County Mayo, a tribe as well respected in Connacht as the Red Branch Knights were in Ulster. The heroine of the tale is Flidhais Fholtchain (Flidhais of the lovely soft hair), a ravishing beauty, a Celtic Artemis, who was married to Oilill Fionn, a king of the Gamhanraidh tribe and the son of a powerful chieftain called Domhnall Dualbhuidhe (Donal of the yellow locks) who lived at Glencastle in Erris and operated the gates to the Mullet Peninsula. Flidhais and Oilill owned two forts in Co. Mayo, one at Rathmorgan, known as Dún Flidhais, situated at the southern end of Carrowmore Lake in Erris, and another west of Lough Conn near Nephin, known as Dún Átha Féan, further south. The Gamhanraidh tribe, of which Flidhais and Oilill were part, owned large stretches of territory, stretching all the way west of the Shannon from North Mayo as far down as County Clare.