Óláfr Guðrøðarson, King of the Isles
Óláfr Guðrøðarson (died 29 June 1153) was a twelfth-century King of Mann and the Isles. As a younger son of Guðrøðr Crovan, King of Dublin and the Isles, Óláfr witnessed a vicious power struggle between his elder brothers in the aftermath of their father's death. At some point, the young Óláfr was entrusted to the care of Henry I, King of England, and like the contemporaneous Scottish monarchs, Alexander I and David I, Óláfr appears to have been a protégé of the English king. As King of the Isles, Óláfr contracted marital alliances with neighbouring maritime rulers. Although he appears to have overseen successful military operations to reclaim the northernmost territories once controlled by his father, he may have witnessed the loss of authority in Galloway as well. Like his counterpart David I, Óláfr was a reformer and moderniser of his realm. However, his four-decade reign ended in abrupt disaster when he was assassinated by three nephews in 1153. Following the ensuing power struggle, Óláfr's son Guðrøðr overcame the kin-slayers, and assumed the kingship of the Kingdom of the Isles.
The Isles—an archipelagic region roughly incorporating the Hebrides and Mann—was ruled by Guðrøðr Crovan for over two decades until his death in 1095, whereupon his eldest son Lǫgmaðr assumed control. Warring soon broke out between factions supporting Lǫgmaðr's younger brother Haraldr, which led to the intervention and encroachment of Irish power into the region. After a short period of Irish domination, the region lapsed into further conflict which was capitalised on by Magnús Óláfsson, King of Norway, who led two military campaigns throughout the Isles and surrounding Irish Sea region at about the turn of the twelfth century. Magnús dominated these regions until his death in 1103, whereupon control of the Isles appears to have fragmented into chaos once again.
Rather than allow ambitious Irish powers fill the power vacuum, Henry I appears to have installed Óláfr on the throne at some point between 1112 and 1115, about the time that Domnall mac Taidc relocated from the Isles to Ireland. Óláfr is recorded to have spent his youth at Henry I's court, and Óláfr's later religious foundations reveal that he was greatly influenced by his English upbringing. In the second quarter of the eleventh century, Óláfr founded Rushen Abbey, a reformed religious house on Mann. He further oversaw the formation of the Diocese of the Isles, the territorial extent of which appears to reveal the boundaries of his realm. Óláfr is recorded to have had at least two wives: Ingibjǫrg, daughter of Hákon Pálsson, Earl of Orkney; and Affraic, daughter of Fergus, Lord of Galloway. The unions seem to reveal that Óláfr shifted from an alliance with Orkney to that with Galloway. Not long after his marriage to Affraic, one of Óláfr's daughters married Somairle mac Gilla Brigte, Lord of Argyll, an emerging power in the region.
Although Óláfr's reign is recorded to have been peaceful, there is reason to suspect that his own succession was uncertain. In 1152, Guðrøðr travelled to Norway and rendered homage to Ingi Haraldsson, King of Norway. At about this time, the Diocese of the Isles was incorporated within the recently elevated Archdiocese of Niðaróss. Whilst this strengthened Norwegian links with the Isles, it secured the ecclesiastical independence of Óláfr's domain, and safeguard his secular authority in the region. Nevertheless, before Guðrøðr returned to the Isles, three sons of Haraldr confronted Óláfr, and demanded a share of the kingdom before slaying him. Although the three men appear to have taken significant steps to counter military intervention from Galloway, they were soon after crushed by Guðrøðr, who returned to the region strengthened by Norwegian military might. Óláfr's descendants went on to reign as kings of the Isles for over a century.