[citation needed] Upon Theodo's death in 716, the divided duchy was plunged into civil war and all the brothers save Grimoald were dead by 719.
[citation needed] Grimoald had married his brother's widow, Biltrude (Pilitrudis), and by canon law this was incest.
In response, Corbinian overthrew the tables, and left, declaring that Grimoald "was not a fit associate for a minister of god.
"[2] Ignoring his wife, who was enraged by this, Grimoald left with his court, and brought the bishop back to the palace.
[2] A few years later, in 725, Charles Martel marched against Bavaria and carried off Pilitrudis, killing Grimoald in battle.