etc., and his references. The Monumenta Hungariae historica, XXI, 1, contain two versions of the letter to Nicholas V (pp. 665–95, 696–702); see Krumbacher, Byzantinische Litteraturgeschichte (Munich, 1897), 311 Strahl, Geschichte der russischen Kirche, I (Halle, 1830), 444 Frommann, Kritische Beitraege zur Geschichte der Florentiner Kircheneinigung (Halle, 1872), 138 seq. Hefele, Conciliengeschichte, VII (Freiburg im Br., 1886), passim. Silvano, Luigi, "Per l'epistolario di Isidoro di Kiev: la lettera a papa Niccolò V del 6 luglio 1453", Medioevo Greco 13 (2013), 223–240 (edition of a letter to Pope Nicholas V) Silvano, Luigi, "Per l'epistolario di Isidoro di Kiev (II): la lettera al Doge Francesco Foscari dell'8 luglio 1453", Orientalia Christiana Periodica 84.1 (2018), 99–132 (edition of a letter to Doge Francesco Foscari). External links Source Исидор (митрополит) in online Russian Biographical Dictionary (in Russian) 1385 births 1463 deaths 15th-century Byzantine military personnel Deans of the College of Cardinals Converts to Eastern Catholicism from Eastern Orthodoxy Metropolitans of Kiev and all Rus' (988–1441) Greek Eastern Catholics Former Greek Orthodox Christians Greek cardinals Greek expatriates in Russia Cardinal-bishops of Sabina Diplomats of the Holy See 14th-century Byzantine people 15th-century Byzantine people People from the Peloponnese Latin Patriarchs of Constantinople Fall of Constantinople