Medlands identifies Elimar as son of a unnamed sister of Huno. "The Historia Monasterii Rastedensis names 'comes Egilmaris filius sororis comitis Hunonis', although there may be some confusion with Count Egilmar [II] as the text also names "uxor sua Eylica."
In contrast, Helyas is a figure from medieval literature. He appears in Le Chevalier au Cigne (c1192). He is an analog of Lohengrin in the Arthurian legends, and supposedly an ancestor of Godfrey of Bouillon.