Dietrich of Bern, a favourite hero of German legend, who in the “Nibelungen” avenges the death of Siegfried, and in the “Heldenbuch” figures as a knight-errant of invulnerable prowess, from whose challenge even Siegfried shrinks, hiding himself behind Chriemhilda's veil; has been identified with Theodoric the Great, king of the Ostrogoths.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Dietrich * Diez, Friedrich Christian