Paul was a Roman aristocrat and member of theOrsini family.[1][2] He and his brotherStephen had been educated for the priesthood at theLateran Palace. Stephen becamepope in 752. After Stephen's death on 26 April 757, Paul prevailed over a faction that wanted to makeArchdeacon Theophylact pope and waschosen to succeed his brother by the majority that wished a continuation of Stephen's policy.
On his return from suppressing a revolt in Benevento, Desiderius visited Rome and compelled Paul to write to Pepin asking him to concede all the Lombard claims. He promised to return Imola, but on condition that the pope should persuade Pepin to send back Lombard hostages held by the Franks. Paul agreed and sent a letter to Pepin.[3] Pepin found it advisable to maintain good relations with Desiderius, and Paul apparently accomplished little by his double-dealing. Later, however, Pepin gave the pope some support and acted as arbiter between the Roman and Lombard claims.
In 765, papal privileges were restored in the duchies of Benevento andTuscany and partially in Spoleto. Meanwhile, the alienation from theEastern Roman Empire grew greater. On several occasions, especially in 759, Paul feared that the emperor would send an army against Rome. This meant that he lived in constant dread of Eastern Roman ambitions turning the Frankish influence in favor of the Lombards. This was actually attempted, but Pepin held to his original policy regarding Italy.