Although Gregory had intended for the southern archiepiscopal see to be located at London, that never happened. A later tradition, dating from 797, when an attempt was made to move the archbishopric from Canterbury to London by King Coenwulf of Mercia, stated that on the death of Augustine, the "wise men" of the Anglo-Saxons met and decided that the see should remain at Canterbury, for that was where Augustine had preached. The idea that an archbishop needed a pallium in order to exercise his archiepiscopal authority derives from the Gregorian mission, which established the custom at Canterbury from where it was spread to the Continent by later Anglo-Saxon missionaries such as Willibrord and Boniface. The close ties between the Anglo-Saxon church and Rome were strengthened later in the 7th century when Theodore of Tarsus was appointed to Canterbury by the papacy. The mission was part of a movement by Gregory to turn away from the East, and look to the Western parts of the old Roman Empire. After Gregory, a number of his successors as pope continued in the same vein, and maintained papal support for the conversion of the Anglo-Saxons. The missionary efforts of Augustine and his companions, along with those of the Hiberno-Scottish missionaries, were the model for the later Anglo-Saxon missionaries to Germany. The historian R. A. Markus suggests that the Gregorian mission was a turning point in papal missionary strategy, marking the beginnings of a policy of persuasion rather than coercion. Another effect of the mission was the promotion of the cult of Pope Gregory the Great by the Northumbrians amongst others; the first "Life" of Gregory is from Whitby Abbey in Northumbria. Gregory was not popular in Rome, and it was not until Bede's "Ecclesiastical History" began to circulate that Gregory's cult also took root there. Gregory, in Bede's work, is the driving force behind the Gregorian mission, and Augustine and the other missionaries are portrayed as depending on him for advice and help in their endeavours. Bede also gives a leading role in the conversion of Northumbria to Gregorian missionaries, especially in his "Chronica Maiora", in which no mention is made of any Irish missionaries. By putting Gregory at the centre of the mission, even though he did not take part in it, Bede helped to spread the cult of Gregory, who not only became one of the major saints in Anglo-Saxon England, but continued to overshadow Augustine even in the afterlife; an Anglo-Saxon church council of 747 ordered that Augustine should always be mentioned in the liturgy right after Gregory.