One probable reason for the British clergy's refusal to cooperate with the Gregorian missionaries was the ongoing conflict between the natives and the Anglo-Saxons, who still were encroaching upon British lands at the time of the mission. The British were unwilling to preach to the invaders of their country, and the invaders saw the natives as second-class citizens, and would have been unwilling to listen to any conversion efforts. There was also a political dimension, as the missionaries could be seen as agents of the invaders; because Augustine was protected by Æthelberht, submitting to Augustine would have been seen as submitting to Æthelberht's authority, which the British bishops would have been unwilling to do. Most of the information on the Gregorian mission comes from Bede's narrative, and this reliance on one source necessarily leaves the picture of native missionary efforts skewed. First, Bede's information is mainly from the north and the east of Britain. The western areas, where the native clergy was strongest, was an area little covered by Bede's informants. In addition, although Bede presents the native church as one entity, in reality the native British were divided into a number of small political units, which makes Bede's generalisations suspect. The historian Ian Wood argues that the existence of the "Libellus" points to more contact between Augustine and the native Christians because the topics covered in the work are not restricted to conversion from paganism, but also dealt with relations between differing styles of Christianity. Besides the text of the "Libellus" contained within Bede's work, other versions of the letter circulated, some of which included a question omitted from Bede's version. Wood argues that the question, which dealt with the cult of a native Christian saint, is only understandable if this cult impacted Augustine's mission, which would imply that Augustine had more relations with the local Christians than those related by Bede. In 604, another bishopric was founded, this time at Rochester, where Justus was consecrated as bishop. The king of Essex was converted in the same year, allowing another see to be established at London, with Mellitus as bishop. Rædwald, the king of the East Angles, also was converted, but no see was established in his territory. Rædwald had been converted while visiting Æthelberht in Kent, but when he returned to his own court he worshiped pagan gods as well as the Christian god. Bede relates that Rædwald's backsliding was because of his still-pagan wife, but the historian S. D. Church sees political implications of overlordship behind the vacillation about conversion.