Ragnar Lodbrok or Lothbrok (, "Ragnar Hairy Breeches") was a legendary Norse ruler, king, and hero from the Viking Age described in Old Norse poetry and several sagas. In this tradition, Ragnar was the scourge of France and England and the father of many renowned sons, including Ivar the Boneless, Björn Ironside, Halfdan Ragnarsson, Sigurd Snake-in-the-Eye, and Ubba. While these men are historical figures, it is uncertain whether Ragnar himself existed or really fathered them. Many of the tales about him appear to conflate the deeds of several historical Viking heroes and rulers.