Virtually no record of Theodoric's life and work has survived.
However, it was the period of the Hungarian invasions of Europe and the conflicts between the Saxon and Frankish duchies.
At the hill castle of Eresburg (Marsberg) in the Bishopric of Paderborn a bloody feud arose in 915 in which Theoderic was also supposed to have participated militarily.
Theodoric died on 8 December 916 and is very probably interred in Paderborn Cathedral.
This article about a German Catholic bishop or archbishop is a stub.