In the

Ulster Cycle The Ulster Cycle ( ga, an Rúraíocht), formerly known as the Red Branch Cycle, is a body of medieval Irish heroic legends and sagas of the Ulaid. It is set far in the past, in what is now eastern Ulster and northern Leinster, particularly coun ...

Irish mythology Irish mythology is the body of myths native to the island of Ireland. It was originally oral tradition, passed down orally in the Prehistoric Ireland, prehistoric era, being part of ancient Celtic religion. Many myths were later Early Irish ...

, Dubthach Dóeltenga ("beetle-tongue",

beetle Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 describ ...

s being proverbially black) was a cynical ally of

Fergus mac Róich Fergus mac Róich (literally " manliness, son of great stallion") is a character in the Ulster Cycle of Irish mythology. Formerly the king of Ulster, he is tricked out of the kingship and betrayed by Conchobar mac Nessa, becomes the ally and lo ...

who rarely had a good word to say about anyone. He accompanied Fergus to escort

Deirdre Deirdre ( , Irish: ; sga, Derdriu ) is the foremost tragic heroine in Irish legend and probably its best-known figure in modern times. She is known by the epithet "Deirdre of the Sorrows" (). Her story is part of the Ulster Cycle, the best-know ...

and

Naoise In Irish mythology, Naisi,"Deirdre and Naisi". In: Thomas, Edward. ''Celtic stories''. Oxford: The Clarendon Press. 1911. pp. 48-60. Noíse or Noisiu (modern spelling: Naoise ) was the nephew of King Conchobar mac Nessa of Ulster, and a son of U ...

back to Ireland under the orders of

Conchobar ( is an old and famous Irish male name meaning "lover of canines". It is the source of the Irish names Conor, Connor, Connors, Conner, O'Connor, etc. It is a name borne by several figures from Irish history and legend, including: * Conchobar ...

and later followed Fergus into exile in

Connacht Connacht ( ; ga, Connachta or ), is one of the provinces of Ireland, in the west of Ireland. Until the ninth century it consisted of several independent major Gaelic kingdoms ( Uí Fiachrach, Uí Briúin, Uí Maine, Conmhaícne, and ...

following Naoise's murder under Conchobar's orders. He was responsible for the death of Conchobar's son, among others. He later fought beside him in the '' Táin Bó Cuailnge'', although at one point Fergus kicked him right out of the camp for his plans to kill

Cú Chulainn Cú Chulainn ( ), called the Hound of Ulster ( Irish: ''Cú Uladh''), is a warrior hero and demigod in the Ulster Cycle of Irish mythology, as well as in Scottish and Manx folklore. He is believed to be an incarnation of the Irish god Lugh ...

References

Ulster Cycle Characters in Táin Bó Cúailnge {{Celt-myth-stub