Found in 1964 at the fortress of Qasr Ibrim in Nubia, the scrolls must be reckoned amongst the most important discoveries in that season's work by the Egypt Exploration Society. They are doubtless the finest surviving example of medieval letters testimonials issued by a Patriarch of the Coptic Church to a bishop after his consecration and before his subsequent enthronement. Their greates importance, however, is as evidence that the Christian Church was still surviving in Lower Nubia in the late 14th century and its adherents numerous enough to warrant their own bishop.