The Orkneyinga saga says that Rognvald was the son of Eystein Ivarsson, himself the son of Ívarr Upplendingajarl.[15] and was married to a daughter of Hrólfr Nose called Ragnhild,[13] although in the Heimskringla she is called Hild.[16] Their son Hrólfr "was so big that no horse could carry him", hence his byname of "Ganger-Hrólf",[13] and he is identified by the saga writers with Rollo of Normandy ancestor of the Dukes of Normandy[
