Background
He was the son of Pepin of Landen and Itta.
politician Mayor of the Palace
He was the son of Pepin of Landen and Itta.
With the death of Pepin in 640, Grimoald became the head of his household, the most powerful in Austrasia. At this time, Radulf, Duke of Thuringia, rebelled against Sigebert III, king of Austrasia. Grimoald participated in the ensuing expedition against the insurrection, but it was a failure.
Nevertheless, Grimoald succeeded in saving the life of the king and became his close friend.
Then, by removing the mayor of the palace, Otto, he took over the position which his father once held. Sigebert eventually had an heir, Dagobert II, but Grimoald feared the fate of his own dynasty and exiled the young Dagobert to either an Irish monastery or the cathedral school of Poitiers.
Grimoald was deposed and executed by the king of Neustria, who thereby reunited the Kingdom of the Franks.