Cormac Cond Longas (Connlongas,Connloinges, "Exiled Prince") was the eldest son ofConchobar mac Nessa by either his wife Clothru or his own mother,Ness, in theUlster Cycle ofIrish mythology. His foster father wasFergus mac Róich.[1]
Cormac followed Fergus into exile inConnacht after theDeirdre affair, and fought forAilill andMedb against his father in theTáin Bó Cuailnge (Cattle Raid of Cooley). During the battle, he prevented Fergus from killing Conchobar.
When Conchobar died theUlstermen asked Cormac to return to Ulster as their king. However, on his journey home he was forced to break hisgeasa (taboos) and was killed when the hostel he and his men were staying in was raided.[2][3]