Guðrøðr Óláfsson had one daughter and at least three sons: Affrica, Ívarr, Óláfr, and Rǫgnvaldr himself. Although nothing else is certain of Ívarr, Óláfr's mother appears to have been Findguala Nic Lochlainn, an Irishwoman whose marriage to Guðrøðr Óláfsson was formalised in 1176/1177, about the time of Óláfr's birth. When Guðrøðr Óláfsson died in 1187, the "Chronicle of Mann" claims that he left instructions for Óláfr to succeed to the kingship since the latter had been born "in lawful wedlock". Whether this is an accurate record of events is uncertain, as the Islesmen are stated to have chosen Rǫgnvaldr to rule instead, because unlike Óláfr, who was only a child at the time, Rǫgnvaldr was a hardy young man fully capable to reign as king.