Amlaíb Conung (Old Norse: Óláfr [ˈoːˌlɑːvz̠]; died c. 874) was a Viking[nb 1] leader in Ireland and Scotland in the mid-late ninth century.
He was the son of the king of Lochlann, identified in the non-contemporary Fragmentary Annals of Ireland as Gofraid, and brother of Auisle and Ímar, the latter of whom founded the Uí Ímair dynasty, and whose descendants would go on to dominate the Irish Sea region for several centuries.
During the late 850s and early 860s Amlaíb was involved in a protracted conflict with Máel Sechnaill, overking of the Southern Uí Néill and the most powerful ruler in Ireland.
Amlaíb allied successively with Cerball, King of Ossory and Áed Findliath, overking of the Northern Uí Néill against Máel Sechnaill.
In later years Amlaíb conducted extensive raids in Scotland, though these were interrupted by a war in 868 against his former ally Áed Findliath when several Viking longphorts along the northern coast were razed.
[nb 4][14]Lochlann, originally Laithlinn or Lothlend, the land where Amlaíb's father was king, is often identified with Norway, but it is not universally accepted that it had such a meaning in early times.
[17] If he did indeed leave Ireland, Amlaíb had returned by 857 at the latest when he and Ímar fought against Máel Sechnaill,[nb 5] overking of the Southern Uí Néill, and a group of Vikings sometimes known as the Norse-Irish.
[nb 6] Máel Sechnaill was the most powerful king in Ireland at the time and his lands lay close to the Viking settlement of Dublin.
[20] The fighting began in the previous year: "Great warfare between the heathens and Mael Sechnaill, supported by Norse-Irish" is reported by the Annals of Ulster.
[25] In 858 Ímar, allied with Cerball, King of Ossory, routed a force of Norse-Irish at Araid Tíre (east of Lough Derg and the Shannon in modern-day County Tipperary).
At the beginning of his reign in the 840s, Cerball's allegiance was pledged to the over-king of Munster, but as that kingdom grew weaker Ossory's strategic location allowed opportunities for his advancement.
[28] The following year Amlaíb, Ímar and Cerball conducted a raid on Máel Sechnaill's heartlands in Meath,[nb 7] and in consequence a royal conference was held at Rathugh (modern-day County Westmeath).
[30] Following this meeting Cerball shed his allegiance to the Vikings and formally submitted to Máel Sechnaill in order to "make peace and amity between the men of Ireland".
[31] With their ally turned against them, Amlaíb and Ímar sought a new alliance with Áed Findliath, overking of the Northern Uí Néill, and rival of Máel Sechnaill.
[32] In 860 Máel Sechnaill and Cerball led a large army of men from Munster, Leinster, Connacht and the Southern Uí Néill into the lands of Áed Findliath near Armagh.
[36] Amlaíb and Ímar, now joined in Ireland by their younger brother Auisle, sought to make use of this change to extend their influence in the lands of the Southern Uí Néill.
Downham concludes he is identical to Ivar the Boneless, a Viking leader who was active in England during this period as a commander of the Great Heathen Army.
[46] In 865 or 866 a battle was won by Flann mac Conaing, overking of Brega, against the Vikings, possibly in retaliation for the raids on his land by Amlaíb and his brothers in 863.
[52] In retaliation for this defeat Amlaíb raided the monastery at Armagh, which was one of the most important religious sites patronised by the over-kings of the Northern Uí Néill.
[57] According to the Pictish Chronicle, he died around 874 during a protracted campaign against Constantine I in Scotland:[nb 11][60] ...after two years Amlaib, with his people, laid waste Pictavia; and he dwelt there from 1 January until the feast of Saint Patrick.
"[63] The Landnámabók says that Olaf the White landed in Ireland in 852 and established the kingdom of Dublin, closely corresponding to the Irish annals' account of Amlaíb.
[68] Todd in his translation of Cogadh Gaedhel re Gallaibh suggests that Thorstein and Oistin are the same person, but later historians have rejected this due to "the obvious discrepancy of their dates".
[72] It has been suggested that the reference to Áed is mistaken, and that Amlaíb's wife was a daughter of Cináed mac Conaing, who had been drowned by Máel Sechnaill in 851.