Upon Óláfr's return from his pilgrimage, the "Chronicle of Mann" records that Rǫgnvaldr had him marry ""Lauon"", the sister of his own wife. Rǫgnvaldr then granted Lewis and Harris back to Óláfr, where the newly-weds proceeded to live until the arrival of Reginald, Bishop of the Isles. The chronicle claims that the bishop disapproved of the marriage on the grounds that Óláfr had formerly had a concubine who was a cousin of Lauon. A synod was then assembled, after which the marriage is stated to have been nullified. Although the chronicle alleges that Óláfr's marriage was doomed for being within a prohibited degree of kinship, there is evidence to suggest that the real reason for its demise was the animosity between the half-brothers. For example, Reginald and Óláfr appear to have been closely associated, as the chronicle notes that, not only was Reginald was a son of Óláfr's sister, but that Óláfr had warmly greeted Reginald when the latter arrived on Lewis and Harris. Furthermore, it was Reginald who had instigated the annulment. In fact, after the previous Bishop of the Isles died in 1217, Reginald and Nicholas de Meaux, Abbot of Furness had vied for the office of bishop. Whilst Reginald appears to have enjoyed the support of Óláfr, Rǫgnvaldr appears to have supported the bid of Reginald's rival, Nicholas.