Ivar the Boneless was the brother of which 9th century Viking chieftain?
Ubba Ubba, also known as Hubba, Ubbe, and Ubbi, was a mid-ninth-century Viking chieftain and one of the commanders of the Great Army, a coalition of Norse warriors that in AD 865 invaded the Anglo-Saxon kingdoms of Northumbria, Mercia, East Anglia and Wessex.
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.