Ogier the Dane, a legendary hero, was the son of Gudfred, king of Denmark. In La Chevalerie Ogier de Danemarche, Ogier had a son who was slain by Charlot, son of Charlemagne. Seeking revenge, Ogier sought out and slew Charlot, and was only barely prevented from killing Charlemagne himself. He resisted Charlemagne for seven years, but made peace with him in order to fight at Charlemagne's side against the Saracens. Legend has it that Ogier walked all the way from his final battle in France to the Castle Kronborg in Helsingør. Ogier is said to dwell in the castle, his beard grown down to the floor. He will awake when Denmark is in mortal danger, at which time he will rise up and deliver the nation.
An inscription on Ogier the Dane's sword Cortana read “My name is Cortana, of the same steel and temper as Joyeuse and Durendal.”