Anonymous work of obvious Edessan origin covering from 132131 BC, when Edessa became capital of the new kingdom of Osroene, until AD 540. Shortly after the latter year, the chronicle was continued by a Chalcedonian author of dyophysite tendencies. For the earliest period it is generally limited to brief information, whereas from 303 the destruction of the walls of Edessa it becomes more detailed. The chronicler seems to base himself primarily on the sources, both ecclesiastical and secular, of the archives of Edessa; he often allows us to date events with great precision, which confers a great historical value on the small work. He also used some literary works, e.g., the chronicle attributed to Joshua the Stylite.