In the Völsunga saga, Gudrun and Brynhild have a discussion on the "greatest of men" referring to a legend now lost, where Hagbard is mentioned together with Haki's sons, who have not yet avenged their sisters by killing the evil Sigar (the feud with Sigar is still going on and Hagbard not yet hanged): "Good talk," says Gudrun, "let us do even so; what kings deemest thou to have been the first of all men?"
Brynhild says, "The sons of Haki, and Hagbard withal; they brought to pass many a deed of fame in the warfare."
Yet Sigar took their one sister, and burned the other, house and all; and they may be called slow to revenge the deed; why didst thou not name my brethren who are held to be the first of men as at this time?
"[1]Snorri Sturluson wrote in the Ynglinga saga that Hagbard occasionally plundered together with his brother Haki.
Concerning, the adventures and death of the Swedish king Jorund (whom Snorri makes a successor of Haki), he cites the poem Háleygjatal by a Norwegian skald named Eyvindr skáldaspillir containing the Kenning Sigar's steed referring to the legend of Hagbard and Signy: The same kenning appears with Hagbard's name in a stanza from Ynglingatal, which Snorri also quotes in the same section: