Hagbard and Signe was based on characters from a work by which Danish historian?
Hagbard and Signe: Hagbard and Signe or The Red Mantle (Danish: "Den røde kappe" , Swedish: "Den röda kappan" , Icelandic: "Rauðu skikkjuna" ) is a 1967 Danish-Swedish-Icelandic drama film based on the story of Hagbard and Signy from the twelfth-century work "Gesta Danorum" by Saxo Grammaticus, directed by Gabriel Axel and starring Gitte Hænning.
i don't know