Question: What is the date of death of Rǫgnvaldr Óláfsson (Fl. 1164)'s father?
Sentence (from "Rǫgnvaldr Óláfsson (fl. 1164)"): In 1164, when Somairle was killed in an invasion of Scotland, and while Guðrøðr was away in exile overseas, Rǫgnvaldr briefly seized the kingship for himself, before being overcome by Guðrøðr, who had him blinded and mutilated.
Relevant evidence: No