[5, 8] þrír forsnjallir synir jarls ‘three exceedingly brave sons of a jarl’: One of these is Grjótgarðr, the uncle of Hákon jarl and son of another Hákon; the others are unidentified (see ÍF 28, Ættaskrár V, for a genealogy of the jarls of Hlaðir (Lade)).