The book describes the genealogy of Saint Ignatius of Mariupol, the last Metropolitan of the Gotfeo-Kafai Diocese and the spiritual leader of the resettlement of Christians from the Crimean Khanate to the Russian Empire in 1778. The genealogy begins with the Fourth Crusade in the 13th century and is traced to the present day. Along with generational genealogies, the book presents genealogical trees of the Byzantine branch of the Venetian feudal Gozzadini family and the Russian noble Gozadinov family. The appendix contains texts of archival documents that allow us to understand what Metropolitan Ignatius and his descendants were like. Metropolitan Ignatius occupies an important place in the memory of the Mariupol Greeks. It was with his blessing and with his direct involvement that the Crimean Christians left Crimea in 1778 and settled in the Azov region. Here, they formed the largest Greek diaspora in the territory of the Russian Empire, known today as the Mariupol Greeks. Memories of the migration have sunk into oblivion, and the image of the metropolitan and his worldly life have disappeared under a layer of legends and fiction. We hope that the recently discovered archival documents concerning the Gozadini family will allow the reader to see this remarkable historical figure in a real, and not mythologized light.