Background
He was the second son of Theodo and Folchaid. His father divided the duchy between his four sons some time before 715.
He was the second son of Theodo and Folchaid. His father divided the duchy between his four sons some time before 715.
On his death in 716, the duchy was divided, but it is not certain whether this division was territorial or not. If so, it seems likely, from references to wars with the Thuringii, that Theobald had his capital at Ratisbon and his dukedom corresponded to that diocese. Theobald"s name occurs commonly in the "Codex of Salzburg" (Salzburger Verbrüderungsbuch) of 784.
Theobald married Biltrude as his first or second wife.