مروان بن محمد
The earlier portions of the text are derived mainly from Eusebius and Coptic tradition. But from the 6th century onwards, the biographies grow longer and often seem to derive from documents written by eyewitnesses of the events recorded. The Muslim conquest of Egypt is recorded, and a vivid eyewitness account included of the overthrow of the last Umayyad Caliph, Marwan II.