Abstract
At the beginning of the 9th c. George Syncellus began to write a universal chronicle, the second part of which was completed by the monk Theophanes. According to Byzantine tradition this monk was Theophanes the Confessor. But 10th-century sources note that this Theophanes was the grandfather or greatuncle of the emperor Constantine VII, which is historically impossible. This prompted P. Speck to invent “another Theophanes”, who lived during the second half of the 9th c. and was the editor of the Chronicle of Theophanes. The hypothesis turns out to be unfounded and untenable. Also untenable and unrelated to the sources is the hypothesis of C. Zuckerman that the author of the Chronicle is another Theophanes who lived at the same time as the Confessor. This study, after an analysis of sources, proves in both cases that they are historical phantoms.