 Most of the surviving contemporary accounts of his patriarchate are partisan, and must be used with care.Yohannan Hormizd himself wrote a polemical autobiography in Syriac, a fragment of which (breaking off in 1795) was translated into English by the Anglican missionary George Percy Badger and reproduced in his classic 1852 study of the Church of the East, "The Nestorians and Their Rituals".His opponents responded with an equally intemperate history of the monastery of Rabban Hormizd under the headship of Gabriel Dambo of Mardin (1775–1832), which was published in a French translation by M. Brière in 1910 and 1911.