Married in 650, Regensburg, to Folchaid av WORMS 630-700 with
F Regarde av BAYERN 655-700
M Theodbert av BAYERN 657-719
M Theobald av BAYERN 659-719
M Tassilo II av BAYERN 661-719
M Grimoald av BAYERN 663-725
F Willigard av BAYERN 665-730

Theodo also known as Theodo V and Theodo II, was the Duke of Bavaria and it is with Theodo that the well-sourced history of Bavaria begins.

He strengthened his duchy internally and externally and he was a prince of great power whose fame extended beyond his borders. Theodo established his capital at Ratisbona (modern Regensburg). He married Folchaid, of the Frankish (possibly Robertian) aristocracy in Austrasia, to build diplomatic ties there.

He intervened in Lombard affairs by harbouring the refugees Ansprand and Liutprand, whom he assisted militarily on his return to claim the Iron Crown. Liutprand later married his daughter Guntrude. Theodo also defended his duchy ably from the Avars (with some failure in the east).

Theodo is the patron to the four great missionaries of Bavaria: Saint Rupert, Saint Erhard, Saint Emmeram, and probably Saint Corbinian. He was the first to draw up plans for the Bavarian church, aiming both at a deeper cultivation of the countryside as well as greater independence from the Frankish Kingdom by a closer association with the Pope. He was the first Bavarian duke to travel to Rome, where he conferred with Pope Gregory II. The diocesan seats were placed in the few urban centres, which served as the Duke's seats: Regensburg, Salzburg, Freising and Passau.

Two of his children are involved with the death of Saint Emmeram. Theodo's daughter Uta had become pregnant by her lover. Fearing her father's wrath, she confided to Emmeram and the saint promised to bear the blame, as he was about to travel to Rome. Soon after his departure, Uta's predicament became known and in keeping with the agreement she named Emmeram as the father. Her brother Lantpert went after Emmeram and greeted him as "bishop and brother-in-law," i.e., episcope et gener noster! Then he had Emmeram cut and torn into pieces. Theodo had the remains of the saint moved to Regensburg. Nothing more is known of Lantpert and Uta.

Gift med
Folchaid av Worms, född 630 i Worms, Rheinland-Pfalz, Tyskland, död 700 i Worms, Rheinland-Pfalz, Tyskland. Hertiginna av Bayern.

Barn:
Regarde av Bayern, född 655, död 700