Irish Sagas at UCC University College Cork



Echtra mac nEchach Muigmedóin

Background information

References in the Annals of the Four Masters and the Annals of Ulster

M358.1 The first year of Eochaidh Muighmheadhoin in sovereignty over Ireland.

M365.1 The eighth year of Eochaidh Muighmheadhoin, son of Muireadhach Tireach, over Ireland, when he died at Teamhair.

M379.1 The first year of Niall of the Nine Hostages, son of Eochaidh Muighmheadhoin, in the sovereignty of Ireland.

M405.1 After Niall of the Nine Hostages, son of Eochaidh Muighmheadhoin, had been twenty seven years in the sovereignty of Ireland, he was slain by Eochaidh, son of Enna Ceinnseallach, at Muir nIcht, i.e. the sea between France and England.

U445.1 Nath Í son of Fiachra son of Eochu Mugmedón was killed at the Alps mountain, or died after having been struck by a thunderbolt when he invaded its confines; and he reigned in Ireland for 23 years.

U462.1 Death of Laegaire son of Niall.

U463.1 Beginning of the reign of Ailill Molt, son of Nath Í.

M464.3 Conall Gulban, son of Niall of the Nine Hostages (from whom are descended the Cinel Conaill), was slain.

U465.2 Eógan son of Niall died.

U482.1 The battle of Ochae … in which Ailill Molt fell.

U539.2 The battle of Luachair. Tuathal Maelgarb son of Cormac Caech son of Cairpre son of Niall Naígiallach was victor as some state.

U544.1 Tuathal Maelgarb was killed … and Diarmait son of Cerball succeeded him.

U555.2 Colmán Mór son of Diarmait Derg son of Fergus Cerrbél son of Conall of Cremthann son of Niall Naígiallach — whom Dub Sloit killed.

U565.1 The slaying of Diarmait son of Cerball i.e. by Aed Dub son of Suibne.

U604.2 The slaying of Aed Sláine son of Diarmait Derg son of Fergus Cerrbél son of Conall of Cremthann son of Niall Naígiallach by Conall son of Suibne.

U1014.2 Brian son of Ceinnétig son of Lorcán, king of Ireland, led an army to Áth Cliath. … Of the foreigners there fell … Brotor who slew Brian i.e. chief of the Scandinavian fleet.

U1022.3 Mael Sechnaill son of Domnall son of Donnchad … died in the 43rd year of his reign.

The History of Ireland (Geoffrey Keating), Volume 2

p. 367 He was called Eochaidh Muighmheadhon because, as to his head and breast, he resembled the king, and, as to his waist, he resembled a slave called Mionghadhach, and hence he was called Muighmheadhon.

pp. 411-413 Now this king is called Niall Naoighiallach from his having received nine hostages or nine captives, five of them from the provinces of Ireland, and four from Alba.

p. 413 Fearadhach was his proper name at first; and he was called Dathi, for dathi means ‘quick’; and it was because of the quickness with which he put on his armour that he was called Dathi.

The History of Ireland (Geoffrey Keating), Volume 3

p. 43 He was called Oilill Molt because of a craving for wether’s flesh that his mother Eithne, daughter of Oraidh, felt when she was pregnant with Oilill; and a lady who was with her named Fial, daughter of Eochaidh Seideadh, called him by the name of Oilill Molt after he was born.

pp. 51-53 He is called Tuathal Maol Garbh, for Comain, daughter of Dall Bronach, was his mother, and when she gave birth to Tuathal, she struck his head against a stone as a ceremony foreboding success for him, and the stone made a hollow in his head, and no hair grew in that hollow; hence he was called Tuathal Maol Garbh.

p. 115 He was called Aodh Slaine, for it was on the river which is named Slaine he was born.

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Related poem online: Echtra Mac Echdach Mugmedóin (The Adventure of the Sons of Eochaid Mugmedón)
Maud Joynt (ed. & tr.), Ériu, Volume 4, 1910, pp. 91-111.
Digital Edition at JSTOR

Related saga online: Orgain Néill Noígíallaig (How King Niall of the Nine Hostages was slain)
Kuno Meyer (ed. & tr.), Stories and songs from Irish manuscripts: v, Otia Merseiana, 2, 1900, pp. 84-92.
Digital edition at (pp. 84-92); English translation at; Irish text at (pp. 323-324 (857-858)); Irish text at CDI (PDF) (pp. 22-23)

Related saga online: Aided Chrimthainn meic Fidaig (The Death of Crimthann son of Fidach)
Whitley Stokes (ed. & tr.), Revue Celtique, 24, 1903, pp. 174-189.
Digital Edition at (pp. 174-189)

Standish H. O’Grady (ed. & tr.), Silva Gadelica, (London: Williams and Norgate, 1892), Volume 1, pp. 330-336; Volume 2, pp. 373- 378.
Irish text at (pp. 330-336); English translation at (pp. 373-378 (407-412)); English translation at

Related saga online: Aided Nath Í ocus a Adnacol (The Violent Death of Nath Í and his burial)
John O’Donovan (ed. & tr.), The genealogies, tribes and customs of Hy-Fiachrach, pp. 16-33.
Digital Edition at (pp. 16-33)

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G = The Martyrology of Gorman (Stokes)
O = The Martyrology of Oengus the Culdee (Stokes)

G: 9 February, Cairech Dergain, a virgin from Cluain Bairenn in Húi Maine (See Section 6), p. 33

O: 9 February, Cairech Dergain of Clúain Bairenn in Húi Maine on the brink of the Shannon. She was a sister of Énda of Aran (See Section 6), p. 59, pp. 71-73

R = The Rennes Dindshenchas (Stokes), Revue Celtique, 15-16, 1894-95
M = The Metrical Dindshenchas (Gwynn)
B = The Bodleian Dinnshenchas (Stokes), Folklore, 3, 1892
S = Silva Gadelica (O’Grady), Volume 2
R: Almu (in Adarca Hua Failgi §16) (See Section 3), Part 1, p. 309, (‘Almu’)
M: Almu I (See Section 3), Volume 2, pp. 73-77, pp.106-107
M: Almu II (See Section 3), Volume 2, p. 79, p.107
M: Codal (See Section 3), Volume 4, pp. 269-271, p. 447
R: Mag Femen, Mag Fera, Mag Fea §44 (See Section 3), Part 2, pp. 435-437, (‘Mag Femen, Mag Fera, Mag Fea’)
M: Mag Femin, Mag Fera, Mag Fea (See Section 3), Volume 3, p. 199
M: Mag Femin II (See Section 3), Volume 3, p. 201-205
B: Mag Femin §16 (See Section 3), pp. 483-484, (‘Mag Femin’)
S: Mágh Femen (See Section 3), p. 523 (557), p. 529 (563)
R: Mag Lifi §12 (See Section 3), Part 1, pp. 303-305, (‘Mag Lifi’)
M: Mag Life, (See Section 3), Volume 2, p. 61, p.104
B: Mag Liphi §4 (See Section 3), pp. 473-474, (‘Mag Liphi’)
S: Mágh Liffe (See Section 3), p. 530 (564)
R: Moenmag §63 (See Section 3), Part 2, p. 461, (‘Moenmag’)
M: Moenmag (See Section 3), Volume 3, p. 335-337
B: Mag Main (= Moenmag) §25 (See Section 3), pp. 491-492, (‘Mag Main’)
S: Maenmhágh (See Section 3), p. 525 (559)
R: Temair §1 (See Section 1), Part 1, pp. 277-289, (‘Temair’)
M: Temair 1 (See Section 1), Volume 1, pp. 3-5.
M: Temair 2 (See Section 1), Volume 1, pp. 7-13
M: Temair 3 (See Section 1), Volume 1, pp. 15-27
M: Temair 4 (See Section 1), Volume 1, pp. 29-37
M: Temair 5 (See Section 1), Volume 1, pp. 39-45
B: Temuir §1 (See Section 1), p. 470, (‘Temuir’)
S: Temhuir (See Section 1), p. 514 (548)
R: Uisnech (in Mide §7) (See Section 19), Part 1, pp. 297-299, (‘Uisnech’)
M: Uisnech (in Mide) (See Section 19), Volume 2, pp. 43-45, p.100
B: Uisnech (in Mide §7) (See Section 19), pp. 475-476, (‘Uisnech’)
S: Uisnech (in Midhe) (See Section 19), pp. 520-521 (555-556)

Cóir Anmann: Fitness of Names (Stokes), Irische Texte, Ser. III.2
Aed Sláine §133 (See Section 19), pp. 343-345, p. 417
Ailill Molt §147 (See Section 16), p. 353, p. 418
Dathí §146 (See Section 16), p. 353, p. 418
Eochaid Muigmedon §117 (See Section 1), p. 339, p. 416
Énda Cennselach §209 (See Section 3), pp. 373-375, p. 420
Níall Nói-gíallach §118 (See Section 1), p. 339, p. 416
Torna Éces (in Conall Corc §54) (See Section 2), pp. 311-313
Tuathal Mael-garb §273 (See Section 19), p. 403, p. 424

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Book of Ballymote
Liber Flavus Fergusiorum
Yellow Book of Lecan
Cycles of the Kings
Áed Sláine (d. 604); High Kings of Ireland; Síl nÁedo Sláine
Ailill mac Echach Mugmedóin
Ailill Molt (d. 482); High Kings of Ireland; Kings of Connacht
Brian Borúma (d. 1014); High Kings of Ireland
Brión mac Echach Muigmedóin; Uí Briúin
Colmán Már (d. 555); Clann Cholmáin
Conall Gulban mac Néill (d. 464); Cenél Conaill
Diarmait mac Cerbaill (d. 565); High Kings of Ireland; Kings of Uisnech
Eochaid Muigmedon; High Kings of Ireland
Eoghan mac Néill (d. 465); Cenél nEógain
Fiachrae mac Echach Muigmedóin; Uí Fiachrach
Lóegaire mac Néill (d. 462); High Kings of Ireland
Máel Sechlainn mac Domnaill (d. 1022); High Kings of Ireland
Nath Í (Dathí) mac Fiachrach (d. 445); High Kings of Ireland; Kings of Connacht
Niall of the Nine Hostages (d. 405); High Kings of Ireland; Uí Néill
Torna Éices; Chief Ollamh of Ireland
Túathal Máelgarb (d. 544); High Kings of Ireland
Hill of Allen

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