What was an island that Guðrøðr Óláfsson ruled over?
Guðrøðr Óláfsson Guðrøðr Óláfsson (died 10 November 1187) was a twelfth-century ruler of the kingdoms of Dublin and the Isles. Guðrøðr was a son of Óláfr Guðrøðarson, King of the Isles and Affraic, daughter of Fergus, Lord of Galloway. Throughout his career, Guðrøðr battled rival claimants to the throne, permanently losing about half of his realm to a rival dynasty in the process. Although dethroned for nearly a decade, Guðrøðr clawed his way back to regain control of a partitioned kingdom, and proceeded to project power into Ireland. Although originally opposed to the English invasion of Ireland, Guðrøðr adeptly recognised the English ascendancy in the Irish Sea region and aligned himself with the English. All later kings of the Crovan dynasty descended from Guðrøðr.
Olaf II of Norway Olaf II Haraldsson (995 – 29 July 1030), later known as St. Olaf (and traditionally as St. Olave), was King of Norway from 1015 to 1028. He was posthumously given the title "Rex Perpetuus Norvegiae" (English: Eternal/Perpetual King of Norway ) and canonised at Nidaros in (Trondheim) by Bishop Grimkell, one year after his death in the Battle of Stiklestad on 29 July 1030. His remains were enshrined in Nidaros Cathedral, built over his burial site. His sainthood encouraged the widespread adoption of the Christian religion.