 The reallocation of church land was not new by Charles' reign; Ian Wood has managed to identify the practice going back to the reigns of Dagobert I (629-639) and Clovis II (639-657).The majority of the sources that depict Charles' involvement in Church land rights come from the 9th century, and are therefore less reliable, but two supposedly contemporary sources also identify this issue.The first, a letter sent by missionary Saint Boniface to Anglo-Saxon king Æthelbald of Mercia, called Charles' a 'destroyer of many monasteries, and embezzler of Church revenues for is own use...', condemning him for his use of Church property.