Ivar the Boneless was the brother of which 9th century Viking chieftain?
Ivar the Boneless Ivar the Boneless (Old Norse: "Ívarr hinn Beinlausi" ; ) was a Viking leader and a commander who invaded what is now England. According to the "Tale of Ragnar Lodbrok", he was the son of Ragnar Lodbrok and Aslaug. His brothers included Björn Ironside, Halfdan Ragnarsson, Hvitserk, Sigurd Snake-in-the-Eye and Ubba.
Gissur Þorvaldsson Gissur Thorvaldsson (1208 – 12 January 1268) (Icelandic: "Gissur Þorvaldsson" ) was a medieval Icelandic chieftain or "goði" of the Haukdælir family clan, and great-grandson of Jón Loftsson.