Gudrun f
Scandinavian: from an Old Norse female personal name composed of the elements guð god + rūn secret lore. In Norse legend this was the name borne by the heroine of the Volsungasaga, sister of Gunnar and wife of Sigurd, whose destruction she brought about. The name was revived in the second part of the 19th century, and is now also used in Germany and to some extent in the English-speaking world, probably under the influence of Wagner, although the character of Gutrune in Wagner's Götterdämmerung does not correspond to the Gudrun of the Volsungasaga.
Pet form: Norwegian: Guro (informal).
First names dictionary. 2012.