Cuthbert was the recipient of a long letter from
Boniface who complained about the lax morals of the clergy in the British Isles, and too much drinking of alcohol by the Anglo-Saxon bishops. Cuthbert also sent letters to
Lull who was
Archbishop of Mainz and a native of England. During Cuthbert's time as archbishop he no longer claimed authority over all of Britain, like his predecessor Theodore. Pope
Gregory III in 735 had sent a
pallium to the bishop of York, raising the see of York to the status of an archbishopric. As a sign of the enhanced status of York, Cuthbert only consecrated bishops south of the
Humber and his synods were attended only by bishops from the south of England. This gathering mandated that all clergy should explain the basic tenets of Christianity to the laity, After the council, Cuthbert continued to correspond with Boniface up until Boniface's martyrdom in 754, and then sent condolences to Boniface's successor. Cuthbert held a second synod in 758, but nothing is known of any enactments it made. He also built the church of St. John the Baptist in
Canterbury, which was destroyed by fire in 1067. He was buried in his new church. The new church was located on the west side of the cathedral, and was used as a
baptistery. The church also became a burial site for many of the archbishops, and later was used for trials by ordeal. There is no explicit contemporary reference that states that these uses were intended by Cuthbert, but the fact that the church was dedicated to St. John the Baptist argues strongly that Cuthbert at least intended the new building as a baptistery. The burial practices of the archbishops did change after Cuthbert, but it is not clear whether this was intended by Cuthbert, as a Post-Conquest Canterbury
cartulary has it, or due to other reasons, unconnected with Cuthbert. Although
Sonia Hawkes argues that the change in burial customs, which extended over most of Britain, resulted from Cuthbert's mandating burial in churchyards, instead of outside the city limits as had been the custom previously. However, the main evidence for this theory is a 16th-century tradition at Canterbury and the archaeological evidence of a change in burial patterns. Although a change did occur, the archaeological evidence does not give a reason why this change happened, and given the late date of the Canterbury tradition, the theory cannot be considered proven. ==Death and legacy==