He also argues that Otto's mentioned grants were to people Pietro had alienated. Giovanna, as a repudiated wife, must have been hostile to Pietro. Mor also thinks that the mentioned Vitale Candiano was not Pietro's brother, but the son he had with Giovanniccia, who had been forced into the priesthood. He sees Otto's grants as measures to create ties with a Venetian faction which was opposed to Pietro. To Mor other measures Otto took also indicate his hostility towards Pietro. When Otto crushed the anti-Otto faction, he gave privileges to the bishop of Belluno, whose seat was in Oderzo, and allowed the bishop of Padua, whose territory bordered that of Venice, to build a castle. Mor sees Pietro's mentioned military actions against Oderzo and Ferrara as being part of his opposition to Otto. When Otto secured his control over Italy, Pietro was forced to change stance and to seek a rapprochement with Otto and his own opponents in Venice because he lost his anti-Otto supporters on the mainland and the Byzantines, who had supported resistance to Otto, were routed in Sicily in 965. Betrolini notes that it is difficult to ascertain which of the two interpretations is more likely due to uncertainties regarding the chronology of the main events (Pietro's attacks on the two towns, his marriage to Waldrada and Otto's pardon of Waldrada's father) and the identification of Vitale Candiano. Staley Edgcumbe had a different take regarding the repudiation of Giovanniccia. She had been a divorcee (which was frowned upon in those days) and she was originally Pietro's mistress whom he took into the Doge's Palace when he ousted his father. This was a scandal and Pietro eventually yielded to the popular feelings and forced her to take a vow of chastity and go to the monastery. Giovanniccia disowned the child she had with Pietro, Vitale, and gave him for fostering. He was then put in a monastery. In 987 he became the bishop of Aquileia. However, this take does not take into account the fact that Pietro married Giovanniccia. During his third expedition to Italy (965-66), Otto I decided to define his relationship with the duchy Venice in the context of settling the situation in Italy. In 967 Otto I renewed the old Pactum Lotharii between the duchy of Venice and the Kingdom of Italy, which defined the boundaries of the duchy and its economic relations with the kingdom.