Fridleif was called to the aid of his kinsman Halfdan, governor of Sweden after his father Erik, to help defeat 12 Norwegian brothers who were attacking his country.
During this adventure, he learned of his father's passing and then returned to Denmark, revealing to the people that he had not died as previously believed.
Name spellings are derived from Oliver Elton's 1905 translation, The First Nine Books of the Danish History of Saxo Grammaticus, via Wikisource.
In the Chronicon Lethrense, Fritleff came from the northern regions during the reign of Aki, married the daughter of Rolf Kraki, and had a son by her named Frothi.
The source used for the genealogical information and name spellings is the English translation provided by Mischa Hooker of Augustana College.