Since Gordon's list jumps from Conrad I to Conrad VI of Franconia (with an unnumbered "Conrad the Younger"), one is left to suspect that more is known about some other Conrads.
This small state was far from Germany, a fief of Burgundy, surrounded by the Papal enclave of Avignon, whose Princes recently derived from the Free Counts of Burgundy.
Lists and treatments of the Thuringian Dukes seem to be curiously hard to come by, and I have relied on a single historical website.
Jordanes states that Theodorid was thrown from his horse and trampled to death by his advancing men, but also mentions that another story had Theodorid slain by the spear of the Ostrogoth Andag.
Jordanes' list for Attila's allies includes the Gepids under their king Ardaric, as well as an Ostrogothic army led by the brothers Valamir, Theodemir (the father of the later Ostrogothic king Theodoric the Great) and Vidimer, scions of the Amali (Getica 38.199).
This document is a list of officials and military units that Jones believes was last updated in the first decades of the 5th century.