 Perhaps inspired by the Fragmentary Annals, which offer some positive views of Vikings and may have been popular in the Norse-Gael Dublin of the 11th century, many Icelandic genealogies include Cerball—Kjarvalr Írakonungr—as an ancestor.Lastly, "The Prophecy of Berchán", an 11th-century verse history of kings in Ireland and Scotland presented as a prophecy, may include Cerball.A very large number of genealogies exist, along with geographical and legal texts.