Heaþoric: Malone states that this is the Heiðrekr of the Harvararsaga, and while the phonology does not precisely align, the three remaining names in this line are all from Hervararsaga. He also draws a connection between this Heaþoric and the Hæðcyn of Beowulf.
Sifeca: An evil counselor of unknown origin but with lots of speculation (Malone 199).
Hlīþe: Hlǫðr of the Hervararsaga, Lotherus of Saxo Grammaticus, a mythical Gothic or Geatish king, though in the past he was identified with King Leth of the Langobards (Grienberger 1922, 377)
Incgenþeow: Angantyr of the Hervararsaga and the historical King Ongenþeow of Sweden, who appears in Beowulf.