In 1160, Bohemond joined a conspiracy of nobles, including Richard of Aquila, Roger of Acerra, and Gilbert of Gravina.
In 1167, he was again driven from his domains by the imperial army of Frederick Barbarossa led by Rainald of Dassel, the archbishop of Cologne.
In 1168, Bohemond accused Richard, Count of Molise, of conspiracy against the new chancellor Stephen du Perche.
A jury was assembled and found Richard guilty of illegally retaining the lands after the flight of the chancellor Peter.
It is likely that the whole trial was engineered by Gilbert of Gravina, a political opponent of Richard's and an ally of Bohemond's.