[1][2] Órlaith appears to be the only recorded daughter of King Cennétig mac Lorcáin of Thomond (died 951).
[3] She was the second consort of the Irish High King Donnchad Donn.
[4] Órlaith was accused of adultery with her stepson, Óengus mac Donnchad Donn.
[5] Found guilty, she was executed,[4][1] though the manner of her death is uncertain.
The Chronicon Scotorum; sub anno 941, state that "Órlaith daughter of Cennétigh son of Lorcán was slain by Donnchad son of Flann, king of Ireland, having been charged (with illicit sexual relations) with Óengus, his son."