Anglo-Saxon missionaries were instrumental in the spread of Christianity in the Frankish Empire during the 8th century, continuing the work of Hiberno-Scottish missionaries which had been spreading Celtic Christianity across the Frankish Empire as well as in Scotland and Anglo-Saxon England itself during the 6th century (see Anglo-Saxon Christianity).[1] Both Ecgberht of Ripon and Ecgbert of York were instrumental in the Anglo-Saxon mission. The first organized the early missionary efforts of Wihtberht, Willibrord, and others; while many of the later missioners made their early studies at York.