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Cú Chulainn, a MythSource painting
Celtic

Cú Chulainn

The Hound of Ulster · The Hound of Culann · The Champion of Ulster

01Identity

At seven, Cú Chulainn turns aside the attacks of three times fifty boys in games. Born Sétanta, he gains his better-known name after killing Culann’s guard dog and offering to guard the smith’s house until a replacement is trained. He is Ulster’s champion and defender, distinguished from Achilles by his Irish setting, his chariot and the warp-spasm.

Top questions
  • Who is Cú Chulainn?

    Cú Chulainn is a Celtic hero associated with Warfare and martial prowess, The defence of Ulster, Single combat, Heroic courage, Youthful heroism.
    Source

    Source

    • Celtic Mythology
    • Encyclopedia of Celtic Mythology and Folklore
    • The Táin : translated from the Irish epic Táin Bó Cualinge
    • The Mythology of Ancient Britain and Ireland
  • What is Cú Chulainn associated with?

    Warfare and martial prowess, The defence of Ulster, Single combat, Heroic courage, Youthful heroism
    Source

    Source

    • Celtic Mythology
    • Encyclopedia of Celtic Mythology and Folklore
  • What family links are recorded for Cú Chulainn?

    Father: Lugh, Mother: Deichtine, Spouse: Emer, 1 child.
  • What happens in Setanta and the Hound of Culann?

    Setanta killed Culann’s guard hound after it attacked him at the gate, then offered to protect the fort until a replacement could be trained.
    Source

    Source

    • the ancient sources
    • Celtic Mythology
    • Celtic Mythology
  • What happens in The Champion’s Portion at Bricriu’s Feast?

    Briccriu provoked Lóegaire, Conall Cernach and Cú Chulainn to demand the champion’s portion, while their wives quarrelled over precedence at the feast.
    Source

    Source

    • the ancient sources
    • Celtic Mythology
02Family

Parents above, children below, and the figure’s consorts named in between, the same family data as the fact box, laid out as a chart instead of a field list.

LughSúaltamDeichtine
Cú Chulainn

with Emer

Connla
03The names

Sétanta

His birth name

SourceCeltic Mythology

The Hound of Culann

The hound belonging to Culann

SourceCeltic Mythology

The Hound of Ulster

Ulster's legendary warrior-hound

SourceThe Táin : translated from the Irish epic Táin Bó Cualinge

The Champion of Ulster

Ulster's foremost heroic defender

SourceThe Mythology of Ancient Britain and Ireland

04The myths

8 myths, each traced to its primary text and corpus sources, with 5 reviewed modern reworks linked where the evidence supports it.

A woman went into labour during the night while a company of Ulstermen, including Briccriu and Fergus, stayed in her spacious house. Outside, a mare gave birth to two foals. Deichtine entered the house to help with the birth and brought out a boy. The Ulstermen took charge of him and gave him the foals. Deichtine nursed him at her breast.

At dawn, the house and its occupants had vanished. Nothing remained eastward of the Brug except the Ulstermen’s horses, the baby and the two foals. The company returned to Emain Macha, where Deichtine raised the boy. He was called Sétanta. He later fell ill with a fever and died. The women of Ulster lamented him, and Deichtine grieved deeply for her foster-son.

After the lamentation, Deichtine returned home and asked her servant for a drink. A cup of wine was brought to her. A tiny creature was in the drink, and she swallowed it without noticing. This creature was the means by which Lugh fathered a child. Accounts differ over whether Lugh appeared to Deichtine in human form, as a god, in a dream, or while she was in bird form. In the account of the miraculous conception, the child was later brought forth from her.

Deichtine bore a son and gave him the name Sétanta. His conception made Lugh his divine father. The heroes of Ulster disputed who should raise him, then shared responsibility for his upbringing. Each offered what he could teach or give. Fergus instructed him in the manly arts, Findchóem nursed him, Conall Cernach became his foster brother, and Conchobar became his foster father. Other accounts say that Sualtaim mac Roich was his father, or that Deichtine remained a virgin by vomiting out the child.

The Conception and Birth of Cú Chulainn, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

3 sources· checked 2026-08-19

  1. 1Celtic MythologyT1
  2. 2the ancient sourcesT1

    Quote

    The sources tell of Sétanta’s miraculous conception through Deichtine, with Lugh as his divine father and the Ulstermen sharing responsibility for his upbringing.

    the ancient sources

  3. 3The Táin : translated from the Irish epic Táin Bó CualingeT1

A prophecy of glory reached Cú Chulainn, and he seized weapons. He set out in a chariot with his charioteer, Ibor, on his first outing. Ibor warned him that danger lay ahead, but the boy would not turn back. They travelled through Mag mBreg, and Ibor named the forts, fields, fords, settlements, strongholds and fortresses between Temair and Cenannos. He pointed out the fort of the three sons of Nechta Scéne.

The brothers were Fóill, Fannall and Tuachell. Their father was Fer Ulli, son of Lugaid, and their mother was Nechta Scéne. They were enemies of the Ulstermen because the Ulstermen had killed their father. They also claimed to have killed as many Ulstermen as were then living. Cú Chulainn asked to meet them. Ibor warned him against seeking such danger, but Cú Chulainn said they were not travelling there to avoid it. They released the horses where the bog met the river, and Cú Chulainn told Ibor to wake him if warriors appeared.

The three sons came down to the stream and demanded to know who had entered their land. Ibor said that a boy was there on his first outing and that he was taking him home. Fóill mocked the boy and ordered him to leave. Cú Chulainn woke and declared that no boy was there, only a man ready to fight. Ibor warned him that Fóill the Sly could not be struck after a first missed thrust. Cú Chulainn swore by the god of his people that Conchobar’s spear would not miss. He cast it at Fóill and broke his back, then cut off his head and took his spoils. He killed Fannall and Tuachell as well, taking the weapons of the three brothers.

Cú Chulainn then told Ibor to drive towards Emain Macha. He first made the charioteer circle the fortress so that the other boys could see him. When Ibor tried to return through the gates, Cú Chulainn ordered him onwards. They travelled to Sliab Fúait, where Conall Cernach was keeping watch for Ulster. Cú Chulainn claimed that he had come to relieve him. When Conall said he was too young, Cú Chulainn broke the shaft of his chariot with a stone. He then returned to Emain Macha in a battle frenzy.

Cú Chulainn Takes Arms, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1Celtic MythologyT1
  2. 2the ancient sourcesT1

    Quote

    On his first outing, Sétanta killed the three sons of Nechta Scéne, took their weapons, and returned to Emain Macha in a battle frenzy.

    the ancient sources

Cú Chulainn drove with his charioteer, Laeg mac Riangabra, to the Gardens of Lug to meet Emer, daughter of Forgall Monach. No chariot team in Ulster could match their speed. Emer was on the green with her foster-sisters, who were studying embroidery and fine stitching with her. She recognised Cú Chulainn and greeted him. He had come after a search lasting a year, during which messengers had looked throughout Ireland for a suitable wife for him without success.

Cú Chulainn and Emer became attached to one another. Emer declared that she loved him and that she was under his protection. Forgall opposed the match. He presented Emer to Lugaid, the great king of Alamiach’s son, who had come with twelve chariot-warriors to seek wives. Emer resisted the proposed marriage. She held Lugaid’s cheeks and swore by his life and honour that she loved Cú Chulainn. Lugaid feared Cú Chulainn and returned home without taking her as his wife.

Cú Chulainn then travelled to Alba, where Scáthach was at war with her rival Aífe. Scáthach trained him in supernatural combat. He underwent demanding adventures and learned the skills needed for battle. During this time he faced Aífe and defeated her. His training with Scáthach completed the trials connected with his courtship of Emer.

Cú Chulainn returned from Alba and won Emer as his wife. The courtship had taken him from the Gardens of Lug to Forgall’s opposition, then to Alba and Scáthach’s instruction. Emer’s own resolve helped preserve her bond with him, while Cú Chulainn’s journey and victory over Aífe secured his claim to marry her.

The Wooing of Emer and Training with Scáthach, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

3 sources· checked 2026-08-19

  1. 1Celtic Mythology Rocks!T1
  2. 2the ancient sourcesT1

    Quote

    Cú Chulainn won Emer after overcoming Forgall’s opposition and completing his training with Scáthach in Alba, where he defeated Aífe.

    the ancient sources

  3. 3The Táin : translated from the Irish epic Táin Bó CualingeT1

Briccriu urged Lóegaire Buadach to claim the champion’s portion as the king and warriors of Ulster travelled to his feast. He praised Lóegaire as the greatest of Ulster’s warriors. Lóegaire agreed and said that men would die if they opposed him. Briccriu gave the same advice to Conall Cernach, then urged Cú Chulainn to claim the choicest portion. Each hero accepted the challenge.

At the feast, Lóegaire and Conall demanded the champion’s portion. Their dispute threatened violence. Sencha stopped them and warned that they would kill everyone. Conchobar ordered the portion to be divided equally among the warriors. When the feast ended, the three heroes would travel to Ailill in Connacht, who would judge which of them was greatest.

Briccriu then stirred up a second quarrel among the women of Ulster. He met Fedelm, Lóegaire’s wife, and told her that she should enter the hall first. He gave the same welcome to Lendabair, Conall’s wife, and then to Emer, Cú Chulainn’s wife. The women argued over who deserved precedence. After they had spoken, Lóegaire and Conall each declared his own wife the winner. They knocked away posts from the hall so that their wives could enter. Cú Chulainn lifted part of the house and allowed Emer to enter. The ground shook, and Briccriu and his wife fell into the mud with their dogs.

The quarrel was still unsettled. The three heroes went to Connacht, where Ailill tested them through a series of trials. After these tests, Cú Chulainn proved his supremacy over Lóegaire and Conall. He was therefore recognised as the greatest of the three and entitled to the champion’s portion.

The Champion’s Portion at Bricriu’s Feast, a MythSource painting of the scene

In the modern world

The Golden Helmet

Uncategorised

Yeats's play condenses Bricriu's Feast into a single contest: a giant churl offers a beheading bargain, only Cu Chulainn submits to the return blow, and the churl (Cu Roi in disguise) awards him the champion's helmet and portion.

2 sources· checked 2026-08-19

  1. 1Celtic MythologyT1
  2. 2the ancient sourcesT1

    Quote

    After Ailill tested the three champions, Cú Chulainn was judged superior to Lóegaire and Conall and received the champion’s portion.

    the ancient sources

The boy set a stone in his sling and sent it into the sky. Its thunderous sound reached Conall Cernach and knocked him headlong. Before Conall could rise, the boy tied his arms together and sent him back to the king. Conchobar and the Ulstermen were shamed, since no one could withstand him. Cú Chulainn then advanced to meet the boy, performing his feats as he came.

Connla was the son of Cú Chulainn and the warrior woman Aífe. Cú Chulainn had encountered Aífe while training with her mother, Scáthach. When he left, he gave Aífe a ring as a token by which their child could know his parentage. When Connla had grown and wished to find his father, Aífe gave him the ring and sent him to Ireland. She instructed him to give his name to no man and yield to no man.

When Connla reached the shore, Condere asked him his name. Connla refused to answer and said that he yielded to no man. Condere reported this to the king. Conall Cernach went to challenge the boy for the honour of Ulster, but Connla defeated him with the sling stone and bound him. No other warrior came forward until Cú Chulainn agreed to fight.

Emer, Cú Chulainn’s wife, tried to stop him. She feared that the boy was the son Cú Chulainn had once told her about. Cú Chulainn admitted that he had the same fear, but said that he could not refuse the king. At the shore, he ordered the boy to name himself or die. Connla answered that he would die rather than give his name. He then fought Cú Chulainn. Connla obeyed Aífe’s instructions, but Cú Chulainn killed him before learning that he had slain his own son.

The Death of Connla, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

3 sources· checked 2026-08-19

  1. 1Celtic MythologyT1
  2. 2the ancient sourcesT1

    Quote

    Connla refused to name himself, fought Cú Chulainn at the shore, and was killed before his father recognised him as his son.

    the ancient sources

  3. 3The Táin : translated from the Irish epic Táin Bó CualingeT1

Cú Chulainn and Ferdiad met at the ford after Ailill and Medb had driven them against each other. They had been foster-brothers and had trained together under Scathach, Uathach and Aife. Ferdiad said that their friendship was finished and told Cú Chulainn to forget that they had been foster-brothers. Cú Chulainn answered that they had talked enough and gave Ferdiad the choice of weapons until nightfall, since Ferdiad had reached the ford first.

They began with the feats they had learnt in their youth. They used feat-playing shields, sharp-rimmed shields, darts, straight swords and small ivory darts. Later, they fought with slender spears bound tightly with flax. From the grey of dawn until evening, they wounded and bloodied each other. They fought so closely that their shields split, their spears bent and the river was driven from its course. The two warriors trampled and slid in the ford until a dry space opened in its middle.

At night they stopped and gave their weapons to their charioteers. Each man put his arms around the other’s neck and gave him three kisses. Their horses stayed in the same paddock, and their charioteers stayed by the same fire. Cú Chulainn then went to his wife Emer at Cairthenn Cluana-Dá-Dam, the Meadow of the Two Oxen, at Sliab Fuait. Ferdiad told his followers about the pledge he had given Medb, to fight Cú Chulainn or else face six warriors.

Ferdiad returned to the ford the next day, despite his charioteer’s warning that the fight would bring disaster. The combat continued for three days. At last Cú Chulainn used the Gáe Bolga against Ferdiad and killed him in the ford. The foster-brothers had been sent against each other through the actions of Ailill and Medb, and Ferdiad’s life ended in the combat he had been compelled to undertake.

Cú Chulainn’s Combat with Ferdiad, a MythSource painting of the scene

In the modern world

The Táin

Music

Horslips' concept album retells the cattle-raid war from multiple viewpoints, including Cu Chulainn, Medb and Ferdia, with a dedicated Ferdia's Song preserving the ford combat between the two former foster-brothers.

2 sources· checked 2026-08-19

  1. 1Celtic MythologyT1
  2. 2the ancient sourcesT1

    Quote

    After three days of combat, Cú Chulainn killed his foster-brother Ferdiad at the ford with the Gáe Bolga.

    the ancient sources

Erc son of Cairpre took the second spear and threw it at Cú Chulainn’s chariot as he charged. It struck Liath Macha, his favourite horse. Cú Chulainn pulled the spear free and released the horse from the yoke. He then placed the yoke on himself, took the chariot’s burden and charged again. Lugaid seized his third spear and cast it with all his strength. It struck Cú Chulainn, and the Ulster warrior’s entrails spilled out. He stopped in the middle of the plain, wounded beyond hope of living.

Lugaid and his men gathered around him to kill him. Cú Chulainn asked leave to go to the lake for a drink. Lugaid granted it on the condition that he return. Cú Chulainn replied that, if he could not return, he would call them to him. He made his way slowly to the water, pressing one hand against his wound. His geasa had brought him into this peril, while Medb’s forces and the sons of Calatin closed around him.

Knowing that death was near, Cú Chulainn bound himself upright to a pillar stone. He did this so that he would not fall and so that he could face the men who had come against him. He remained standing, supported by the stone, with his enemies before him. They waited until they were certain that he was dead. Cú Chulainn then died facing Lugaid, Medb’s forces and the sons of Calatin.

The Death of Cú Chulainn, a MythSource painting of the scene

In the modern world

No modern rework confirmed yet.

2 sources· checked 2026-08-19

  1. 1Celtic MythologyT1
  2. 2the ancient sourcesT1

    Quote

    Cú Chulainn, pierced by Lugaid’s spear, bound himself to a pillar stone and died standing so that his enemies could not see him fall.

    the ancient sources

Setanta tossed his hurley ball into the air, struck it with his stick and caught both before they fell. He was on his way to Culann’s fort, where King Conchobar had invited him to a feast. Conchobar had told Setanta to come as his guest, but the boy had stayed behind to finish his game. Conchobar then left without remembering that Setanta would follow him.

Culann locked the gate of his fort and released his fierce guard dog outside the walls. The hound was so powerful that three men were needed to hold it with three chains. After the guests had gathered, Conchobar remembered Setanta and warned Culann. The king and the others ran to the rampart above the gate, but the dog had already seen the boy and rushed at him.

Setanta continued his game as the hound approached. He threw the ball and his stick aside, then seized the animal with both hands. He caught its throat in one hand and its back in the other, smashed it against a rock or pillar and killed it. In another account, he threw the ball into the hound’s mouth with such force that it passed through its body before he seized the animal and dashed it against a rock.

The guests were astonished by Setanta’s strength and courage. Culann was distressed because he had lost the dog that guarded his home. Setanta took his hand, apologised and offered to guard the fort himself until Culann could train another hound. Culann accepted his offer. From then on, Setanta was known as Cú Chulainn, meaning Hound of Culann.

Setanta and the Hound of Culann, a MythSource painting of the scene

In the modern world

Conas a Bhain Cú Chulainn a Anim

Film

Under its likely correct title, meaning how Cu Chulainn got or took his name, this retells Setanta killing Culann's hound and earning his name by offering to guard the fort in its place.

Cuchulain of Muirthemne

Book

The work retells Setanta's childhood killing of Culann's guard dog and his offer to serve as the fort's replacement guardian, which gives him the name Cu Chulainn.

The Cuchullin Saga

Book

The work retells Setanta's childhood killing of Culann's guard dog and his offer to serve as the fort's replacement guardian, which gives him the name Cu Chulainn.

3 sources· checked 2026-08-19

  1. 1Celtic MythologyT1
  2. 2the ancient sourcesT1

    Quote

    Setanta killed Culann’s hound, offered to replace it as guardian until another was trained, and thereafter took the name Cú Chulainn, Hound of Culann.

    the ancient sources

  3. 3Celtic MythologyT1

Works that draw on more of the mythology than any single story: full retellings of the saga, and worlds built out of the material.

The Tale of Cú Chulainn

music

A folk-metal song narrating his whole life in sequence: the hound of Culann naming, the warp-spasm battle frenzy, the killing of Ferdiad, and the killing of his own son Connla. It condenses several myths rather than centring one.

The myths across MythSource where Cú Chulainn features, each on that figure’s page.

The film

The Underdrawing video on Cú Chulainn embeds here once it publishes.