and Bacchus, near St. Peter's, endowing it for the support of the poor. Ecclesiastical policy A temporary lull in the conflict between the Byzantines and the Lombards allowed Gregory to deal with some longstanding internal issues, in particular the ongoing jurisdictional dispute between the patriarchs of Grado and Aquileia. Although the Synod of 731 had adjudicated in this matter in favour of Grado, Gregory was forced to reprimand the patriarch of Aquileia, Calixtus, who had attempted to gain possession of the island of Barbana from Grado’s jurisdiction. In 731, he approved the election of Tatwine as archbishop of Canterbury, after the latter came to Rome in person to ask for the pallium. Gregory approved of the election of his successor, Nothhelm, while in 735 he agreed to the request of King Ceolwulf of Northumbria that Bishop Egbert of York should be elevated to the rank of archbishop. Gregory promoted the Church in northern Europe. He supported the continuing mission of Saint Boniface in Germany, elevating him to the rank of archbishop of Germany in 732; and, after a personal visit to Rome from Boniface in 737, where he was meant to attend a synod which does not appear to have been held, Gregory made Boniface a papal legate in Germany, and asked him to reorganize the episcopal sees in Germany. Gregory sent Boniface back to Bavaria with three letters. One commanded the bishops and higher ecclesiastical officers to provide Boniface with as much help as they could. A second was addressed to the nobles and people of Germany, urging them to obey Boniface. A third, addressed to the bishops in Alamannia and Bavaria, confirmed Boniface’s status as the papal vicar, ordering them to assemble in a council twice a year at Augsburg under Boniface’s authority. Gregory promoted the mission of Willibald in Germany. In 732, Gregory banned the consumption of horse meat, both domestic and wild, anathematizing it as an "abomination" since it was associated with pagan ritual feasting. Lombard threat Conscious of the ongoing Lombard threat, Gregory undertook and completed the restoration of the Aurelian Walls during the early 730s. He also refortified Centumcellae, purchasing from Thrasimund II of Spoleto the fortress of Gallese along the Via Flaminia, which had been taken by the Lombards, interrupting Rome’s communications with the exarch at Ravenna. The return of the Lombard king Liutprand in 737 saw a renewal of the Lombard assault