to rebuild the depleted imperial treasury. But Manuel's son was a minor, and his unpopular regency government was overthrown in a violent coup d'état. This troubled succession weakened the dynastic continuity and solidarity on which the strength of the Byzantine state had come to rely. See also List of Byzantine emperors Notes References Sources Primary sources Cinammus, John, Deeds of John and Manuel Comnenus, trans. Charles M. Brand. Columbia University Press, 1976. Robert of Clari (c. 1208). Account of the Fourth Crusade. William of Tyre, Historia Rerum in Partibus Transmarinis Gestarum (A History of Deeds Done Beyond the Sea), translated by E. A. Babock and A. C. Krey (Columbia University Press, 1943). See the original text in the Latin library. Secondary sources Harris, Jonathan, Byzantium and the Crusades, Bloomsbury, 2nd ed., 2014. Harris, Jonathan and Tolstoy, Dmitri, 'Alexander III and Byzantium', in Alexander III (1159–81: The Art of Survival, ed. P. Clarke and A. Duggan, Ashgate, 2012, pp. 301–13. . Further reading External links Manuel coinage 1118 births 1180 deaths 12th-century Byzantine emperors Byzantine people of the Byzantine–Seljuk wars Christians of the Second Crusade Manuel 01 Eastern Orthodox monarchs Sons of Byzantine emperors