 He entrusted the Duchy of Benevento to his son Romuald, and assured the loyalty of the duchies of Spoleto and Friuli, by appointing their dukes.He favoured the integration of the different components of the kingdom, presenting an image modeled on that of his predecessor Rotari—wise legislator in adding new laws to the Edict, patron (building a church in Pavia dedicated to Saint Ambrose), and valiant warrior.With Grimoald's death in 671, his minor son Garibald assumed the throne, but Perctarit returned from exile and swiftly deposed him.