 It is very likely that either Ragnall or Ruaidrí had daughters who married Rögnvaldr and his younger half-brother, Óláfr Guðrøðarson (died 1237). The chronicle states that Rögnvaldr had Óláfr marry "Lauon", the daughter of a certain nobleman from Kintyre, who was also the sister of his own (unnamed) wife. The precise identification of this father-in-law is uncertain, although historical sources concerning the contemporary meic Somairle link this kindred with Kintyre more than any other region, and both Ragnall and Ruaidrí were contemporaneously styled "Lord of Kintyre". It is possible that the first marriage took place sometime before 1210, perhaps not long after 1200, considering the age of Rögnvaldr's son, Guðrøðr. These unions appear to have been orchestrated to patch up relations between the meic Somairle and the Crovan dynasty, rival kindreds who had bitterly contested the kingship of the Isles for about sixty years. In fact, it is possible that Rögnvaldr's kingship was formally recognised by Ruaidrí, the leading meic Somairle dynast, who thereby established himself as a leading magnate within a reunified Kingdom of the Isles.
