1. Son of Conall Cernach and Fedelm Noíchrothach, daughter of Conchobar mac Nessa, who was slain by Dubthach in Táin Bó Cuailnge [Cattle Raid of Cooley].
2. Cited as the son of Eógan Mór of Munster in the Fenian Cycle, where he presents Fionn mac Cumhaill with a fast black horse.
3. A west Munster king who lay with his own daughter, Mugain
4. The only male child of Ernmas, mother of Ireland's female eponyms, Ériu, Banba, and Fódla.
5. An attributed son of Fionn mac Cumhaill and lesser warrior of the Fianna. During the action of Bruidhean Chaorthainn [The Hostel of the Quicken Trees], Fiachna holds off the King of the World and takes many heads in so doing. His foster-brother is Innsa.
