 The historian J. M. Wallace-Hadrill assumes that both letters were general statements of encouragement to the missionaries.Justus became Archbishop of Canterbury in 624, receiving his pallium—the symbol of the jurisdiction entrusted to archbishops—from Pope Boniface V, following which Justus consecrated Romanus as his successor at Rochester.Boniface also gave Justus a letter congratulating him on the conversion of King "Aduluald" (probably King Eadbald of Kent), a letter which is included in Bede's "Historia ecclesiastica gentis Anglorum".