[Ir., fair eyebrows].
Beautiful daughter of Queen Medb and her husband Ailill mac Máta, sister of Faife. She was in love with the heroFráech, who would not pay her dowry. Ailill also feared that an alliance with Fráech would raise the enmity of rival kings. Without telling her daughter, Medb offered Finnabair's favours to many champions in the contest with Ulster, as recounted in Táin Bó Cuailnge [Cattle Raid of Cooley]. Ferdiad accepted the challenge but was killed in combat with Cúchulainn. Later Fráech took on the invincible Cúchulainn and was killed, causing Finnabair to die of a broken heart. The etymology of the name Finnabair links it with the Welsh Gwenhwyfar, the Arthurian Guinevere, and the Anglo-Cornish Jennifer. Sometimes confused with Lendabair, wife of Conall Cernach.