the lombard king, desiderius, agreed to provide troops, and sent a lombard priest, waldipert, to act as his representative, with authority to deal with christophorus and sergius. waldipert accompanied sergius in an attack on rome that ended constantine's papacy. when constantine had been taken captive, waldipert, without alerting sergius, and most likely following instructions from desiderius, collected a number of romans and entered the monastery of st. vitus on the esquiline on sunday, july 31. there they approached philip, declared that saint peter had chosen him as pope, and escorted him to the lateran basilica.