The manuscript was given as a present from Bishop Brynjólfur to King Frederick III in 1656, and placed in the Royal Library of Copenhagen. In 1662, the bishop presented the king with a second medieval manuscript, the "Codex Regius" ("Konungsbók eddukvæða"). It and "Flateyjarbók" survived the Copenhagen Fire of 1728 and the Second Battle of Copenhagen in 1807 and were eventually repatriated to Iceland in 1971 as Icelandic national treasures. They are preserved and studied by the Árni Magnússon Institute for Icelandic Studies.