 The Icelandic Landnámabók describes Cerball ("Kjarvalur") as ruler of Dublin and Earl of Orkney and opens with a list of the most prominent rulers in Viking-age Europe, listing this Ossorian king alongside Popes Adrian II and John VIII; Byzantine Emperors Leo VI the Wise and his brother Alexander; Harald Fairhair, king of Norway; Eric Anundsson and his son Björn Eriksson rulers of Sweden; Gorm the Old king of Denmark; and Alfred the Great, king of England.While it is unsurprising that Cerball's great-great-grandson should have commissioned a work in which his most illustrious ancestor was portrayed in a heroic light, it is less obvious why Cerball in particular should have such a prominent place in the Icelandic sagas and in the genealogies of the founding families of Iceland as recorded by the "Landnámabók".The "Landnámabók" mentions "Kormlöð", "Rafarta, the daughter of Kjarval", "Dufnial, who was the son of Kjarval" and "Friðgerðr, the daughter of Kjarval".