Ulster cycle: where is ferdia the son of fergus?

Dominic Kelly

New Member
Hi - I'm wondering if anyone can help me with a rather obscure question of Irish Mythology: I'm looking for an early Ulster Cycle story in which Ferdia (possibly referred to as Fer Deodae) is described as the son of Fergus Mac Roich. Daithi O Hogain mentions it in his The Lore of Ireland but doesn't name the story, though he says it dates from the ninth century. Does anyone know which story he's referring to? Thanks! Dominic