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Isidore or Isidor of Kiev, also known as Isidore of Thessalonica (1385 – 27 April 1463), was a
prelate A prelate () is a high-ranking member of the Minister (Christianity), Christian clergy who is an Ordinary (church officer), ordinary or who ranks in precedence with ordinaries. The word derives from the Latin , the past participle of , which me ...
of
Byzantine Greek Medieval Greek (also known as Middle Greek, Byzantine Greek, or Romaic; Greek: ) is the stage of the Greek language between the end of classical antiquity in the 5th–6th centuries and the end of the Middle Ages, conventionally dated to the F ...
origin. From 1437 to 1441, he served as the metropolitan of Kiev and all Rus', based in Moscow, after being chosen by Joseph II of Constantinople. As a supporter of the union with Rome, he left Moscow to attend the Council of Ferrara–Florence. On his return in 1441, he was imprisoned but allowed to escape later that year. A council of Russian bishops chose their own metropolitan in 1448, which amounted to a declaration of
autocephaly Autocephaly (; ) is the status of a hierarchical Christian church whose head bishop does not report to any higher-ranking bishop. The term is primarily used in Eastern Orthodox and Oriental Orthodox churches. The status has been compared with t ...
by the
Russian Orthodox Church The Russian Orthodox Church (ROC; ;), also officially known as the Moscow Patriarchate (), is an autocephaly, autocephalous Eastern Orthodox Church, Eastern Orthodox Christian church. It has 194 dioceses inside Russia. The Primate (bishop), p ...
. However, Isidore continued to be recognized by Constantinople as metropolitan until 1458, when Gregory the Bulgarian was made the first metropolitan of the Uniate church. Isidore was later dispatched to Constantinople and he proclaimed the union of the Greek and Latin churches at the
Hagia Sophia Hagia Sophia (; ; ; ; ), officially the Hagia Sophia Grand Mosque (; ), is a mosque and former Church (building), church serving as a major cultural and historical site in Istanbul, Turkey. The last of three church buildings to be successively ...
on 12 December 1452.Isidore of Kiev
Encyclopædia Britannica The is a general knowledge, general-knowledge English-language encyclopaedia. It has been published by Encyclopædia Britannica, Inc. since 1768, although the company has changed ownership seven times. The 2010 version of the 15th edition, ...
, 2008, O.Ed.
Following the
fall of Constantinople The Fall of Constantinople, also known as the Conquest of Constantinople, was the capture of Constantinople, the capital of the Byzantine Empire by the Ottoman Empire. The city was captured on 29 May 1453 as part of the culmination of a 55-da ...
, he returned to Rome. In the
Latin Church The Latin Church () is the largest autonomous () particular church within the Catholic Church, whose members constitute the vast majority of the 1.3 billion Catholics. The Latin Church is one of 24 Catholic particular churches and liturgical ...
, Isidore was the
cardinal bishop A cardinal is a senior member of the clergy of the Catholic Church. As titular members of the clergy of the Diocese of Rome, they serve as advisors to the pope, who is the bishop of Rome and the visible head of the worldwide Catholic Church. C ...
of Sabina, Archbishop of Cyprus, Camerlengo of the Sacred College of Cardinals and the Latin Patriarch of Constantinople.


Early life

Early views on his birthplace suggest that he was born in
Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
,
Thessaloniki Thessaloniki (; ), also known as Thessalonica (), Saloniki, Salonika, or Salonica (), is the second-largest city in Greece (with slightly over one million inhabitants in its Thessaloniki metropolitan area, metropolitan area) and the capital cit ...
, or possibly
Dalmatia Dalmatia (; ; ) is a historical region located in modern-day Croatia and Montenegro, on the eastern shore of the Adriatic Sea. Through time it formed part of several historical states, most notably the Roman Empire, the Kingdom of Croatia (925 ...
. According to one version popular with modern scholars who stress his links to Constantinople, Isidore was born or possibly in
Monemvasia Monemvasia (, or ) is a town and municipality in Laconia, Greece. The town is located in mainland Greece on a tied island off the east coast of the Peloponnese, surrounded by the Myrtoan Sea. Monemvasia is connected to the rest of the mainland by a ...
or somewhere else in the
Morea Morea ( or ) was the name of the Peloponnese peninsula in southern Greece during the Middle Ages and the early modern period. The name was used by the Principality of Achaea, the Byzantine province known as the Despotate of the Morea, by the O ...
. He may have been a born into a noble family, but it is only known that he was well-connected and had the patronage of the Palaiologos dynasty. His youth is also poorly documented, but it is likely that most of his education was at Constantinople. Based on his literary interests, Isidore received training in the scriptures, the
Church Fathers The Church Fathers, Early Church Fathers, Christian Fathers, or Fathers of the Church were ancient and influential Christian theologians and writers who established the intellectual and doctrinal foundations of Christianity. The historical peri ...
, and the laws of the different dioceses and ecclesiastical jurisdictions. As a result, he would have had extensive training in
ancient Greek Ancient Greek (, ; ) includes the forms of the Greek language used in ancient Greece and the classical antiquity, ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Greek ...
, specifically in the Attic dialect. In Constantinople, he studied in the company of Italian humanists, including
Guarino da Verona Guarino Veronese or Guarino da Verona (1374 – 14 December 1460) was an Italian classical scholar, humanist, and translator of ancient Greek texts during the Renaissance. In the republics of Florence and Venice he studied under Manuel Chryso ...
. The earliest work associated with Isidore is the funeral oration composed by Emperor Manuel II for his brother, Theodore I Palaiologos. Isidore later composed a speech commemorating the emperors Manuiel II and John VIII. From 1420 to 1430, Isidore was in the Morea, during the time an offensive was launched by John VIII and his brothers against local Latin lords, including Carlo I Tocco. A sea engagement between the Byzantines and Tocco is known from Isidore's ''
Panegyric A panegyric ( or ) is a formal public speech or written verse, delivered in high praise of a person or thing. The original panegyrics were speeches delivered at public events in ancient Athens. Etymology The word originated as a compound of - ' ...
''. Some historians have speculated that he was attached to the headquarters of the brothers in some capacity during this time and he returned to Constantinople shortly afterward, or that he returned with John VIII to the Constantinople in 1428. A manuscripts suggests that he did not stay in Constantinople for long and embarked on another journey to the Morea, but his ship was blown off course and reached
Sicily Sicily (Italian language, Italian and ), officially the Sicilian Region (), is an island in the central Mediterranean Sea, south of the Italian Peninsula in continental Europe and is one of the 20 regions of Italy, regions of Italy. With 4. ...
instead. It was the time when the Court of
Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...
, on the eve of its final destruction by the Turks, was considering the chance of rescue from the Western princes as a result of reuniting with
Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...
. In 1434, Isidore was sent to
Basel Basel ( ; ), also known as Basle ( ), ; ; ; . is a city in northwestern Switzerland on the river Rhine (at the transition from the High Rhine, High to the Upper Rhine). Basel is Switzerland's List of cities in Switzerland, third-most-populo ...
by John VIII Palaiologos (1425–1448) as part of an embassy to open negotiations with the Council of Basel. Here he made a mellifluous speech about the splendour of the
Roman Empire The Roman Empire ruled the Mediterranean and much of Europe, Western Asia and North Africa. The Roman people, Romans conquered most of this during the Roman Republic, Republic, and it was ruled by emperors following Octavian's assumption of ...
at Constantinople, but his efforts did not result in union of the churches.


Metropolitan of Kiev


Arrival in Moscow

In 1432, a council of Russian bishops chose
Jonah Jonah the son of Amittai or Jonas ( , ) is a Jewish prophet from Gath-hepher in the Northern Kingdom of Israel around the 8th century BCE according to the Hebrew Bible. He is the central figure of the Book of Jonah, one of the minor proph ...
, the bishop of
Ryazan Ryazan (, ; also Riazan) is the largest types of inhabited localities in Russia, city and administrative center of Ryazan Oblast, Russia. The city is located on the banks of the Oka River in Central Russia, southeast of Moscow. As of the 2010 C ...
and
Murom Murom (, ) is a historical types of inhabited localities in Russia, city in Vladimir Oblast, Russia, which sprawls along the west bank of the Oka River. It borders Nizhny Novgorod Oblast and is situated from the administrative center Vladimir, ...
, to succeed
Photius Photius I of Constantinople (, ''Phōtios''; 815 – 6 February 893), also spelled ''Photius''Fr. Justin Taylor, essay "Canon Law in the Age of the Fathers" (published in Jordan Hite, T.O.R., and Daniel J. Ward, O.S.B., "Readings, Cases, Mate ...
as metropolitan. By 1433, Jonah had already styled himself as the metropolitan designate. However, there was a delay in sending Jonah as Grand Prince Vasily II of Moscow did not regain the throne until 1434. Jonah eventually was dispatched to Constantinople at the end of 1435 or the beginning of 1436. However, by the time of his arrival, Joseph II, the patriarch of Constantinople, had already chosen Isidore as metropolitan. According to a letter written by Jonah, it was decreed by the patriarch "and the divine and holy council" that "when Isidor either by God’s will dies, or should anything else happen to him", then Jonah was to be "metropolitan in Russia". Vasily II wrote to the emperor: "What shall we then do? You did not come to us in time and we appointed another to that most holy metropolitan see and we cannot now do otherwise. Isidor is already metropolitan in Russia, and you, onah go back to your see, the bishopric of Ryzan. And should God's will preordain that Isidor dies, or should anything else happen to him, then you, Iona, shall be metropolitan in Russia after him." Isidore arrived in the metropolitan seat of
Moscow Moscow is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia, standing on the Moskva (river), Moskva River in Central Russia. It has a population estimated at over 13 million residents with ...
in April 1437 and was accompanied by Jonah. From the Byzantine point of view, Isidore was ideal based on his erudition, diplomatic skills and command of languages. Isidore's participation in the Council of Basel in particular gave him experience in the interchange of interdoctrinal arguments. Simeon of Suzdal, who had accompanied him, wrote that "the Greeks thought him to be more than all the others a great metropolitan and philosopher". When Isidore first arrived in Russia, nobody suspected him of being a supporter of the union of Rome. Vasily II was unwilling to accept Isidore at first, but this was only due to Jonah having been overlooked in Constantinople. Russian chronicles say that Vasily II tried everything to prevent him from going to "the eighth Latin Council and not to be led astray by their .e. the Latins'heresy", while Jonah also claimed that "however much my lord and son, Grand Prince Vasily, urged him not to go, he was unable to stop him". However, the accounts of Jonah and the chroniclers were written only after Isidore's "betrayal of Orthodoxy". It is also possible that Vasily II requested Isidore to delay his departure in order to deal with the blacklog of ecclesiastical business. On 8 September 1437, after promising Vasily II that he would "strengthen the faith and unite the Church in Orthodoxy", Isidore left Moscow with his retinue numbering one hundred. His retinue included one bishop, Avraamy of Suzdal, and a number of clerics. Avraamy also brought along the monk Simeon, who wrote his polemical ''Tale of the Council of Florence'', as well as other scribes, one of whom was likely the anonymous author of the ''Journey to the Council of Florence'', which was the earliest known Russian description of Western Europe. There were three staging posts in Russia:
Tver Tver (, ) is a types of inhabited localities in Russia, city and the administrative centre of Tver Oblast, Russia. It is situated at the confluence of the Volga and Tvertsa rivers. Tver is located northwest of Moscow. Population: The city is ...
,
Novgorod Veliky Novgorod ( ; , ; ), also known simply as Novgorod (), is the largest city and administrative centre of Novgorod Oblast, Russia. It is one of the oldest cities in Russia, being first mentioned in the 9th century. The city lies along the V ...
and
Pskov Pskov ( rus, Псков, a=Ru-Псков.oga, p=psˈkof; see also Names of Pskov in different languages, names in other languages) is a types of inhabited localities in Russia, city in northwestern Russia and the administrative center of Pskov O ...
. Afterwards, Isidore spent eight weeks in
Riga Riga ( ) is the capital, Primate city, primate, and List of cities and towns in Latvia, largest city of Latvia. Home to 591,882 inhabitants (as of 2025), the city accounts for a third of Latvia's total population. The population of Riga Planni ...
. Finally, he arrived at
Ferrara Ferrara (; ; ) is a city and ''comune'' (municipality) in Emilia-Romagna, Northern Italy, capital of the province of Ferrara. it had 132,009 inhabitants. It is situated northeast of Bologna, on the Po di Volano, a branch channel of the main ...
on 18 August 1438. He found that the patriarch and emperor had been waiting for the Russian delegation since March, while the Western princes never came.


Council of Florence

On 5 July 1439, at the
Council of Florence The Council of Florence is the seventeenth ecumenical council recognized by the Catholic Church, held between 1431 and 1445. It was convened in territories under the Holy Roman Empire. Italy became a venue of a Catholic ecumenical council aft ...
, all the Greeks headed by the emperor, except for Mark of Ephesus, signed the Decree of Union. The only Russian prelate present, Avraamy of Suzdal, signed the union, but, according to Simeon of Suzdal, this was only under duress. In his ''Tale of the Council of Florence'', Simeon says that Avraamy "did not wish o sign but Metropolitan Isidor arrested him and gaoled him for a whole week. Then he signed under constraint." Isidore was made cardinal and Apostolic Delegate "in the Province of Lithuania, Livonia and Russia and in the states, dioceses, territories and places of ''Lechia'' olandwhich are regarded as subject to you in your right as metropolitan". Isidore left Florence on 6 September 1439 and his journey to Moscow took nearly twice as long as his journey to Ferrara. Simeon of Suzdal and the envoy of the prince of Tver, having fallen foul of Isidore, fled from
Venice Venice ( ; ; , formerly ) is a city in northeastern Italy and the capital of the Veneto Regions of Italy, region. It is built on a group of 118 islands that are separated by expanses of open water and by canals; portions of the city are li ...
in December 1439. The envoy presumably reached Tver in early 1440, after which the news of the union would have reached Moscow. In addition, the author of the ''Journey to the Council of Florence'' left Isidore's retinue in August 1440 and arrived in Russia the following month. As a result, Isidore may have been apprehensive of his reception there. From 15 September to 27 December 1439, Isidore was in Venice, before heading to
Buda Buda (, ) is the part of Budapest, the capital city of Hungary, that lies on the western bank of the Danube. Historically, “Buda” referred only to the royal walled city on Castle Hill (), which was constructed by Béla IV between 1247 and ...
, where he issued an
encyclical An encyclical was originally a circular letter sent to all the churches of a particular area in the ancient Roman Church. At that time, the word could be used for a letter sent out by any bishop. The word comes from the Late Latin (originally fr ...
"to the Polish, Lithuanian and German .e. Teutonic Knights'">Teutonic_Knights.html" ;"title=".e. Teutonic Knights">.e. Teutonic Knights'lands and to all Orthodox Christian Russia" in March 1440. After a brief stay in Poland, Isidore spent the first half of the summer in Galicia. By mid-August, he reached Vilnius">Galicia (Eastern Europe)">Galicia. By mid-August, he reached Vilnius and he spent the next six months in Lithuania. Following this, he visited Kiev and then Smolensk, where he took Simeon as prisoner.


Return to Moscow

Isidore arrived in Moscow on 19 March 1441. The chronicle says: "With great pride, falsehood and Latin arrogance he adcarried before him a Latin crucifix and a silver crozier... Should anyone not bow down before the crucifix he ordered them to be beaten with the crozier, as is done in the presence of the pope." It then says: "The metropolitan entered the holy cathedral church of he Dormition ofthe Mother of God and served the holy Liturgy, commemorating in the first place Pope Eugene without mentioning the Orthodox patriarchs." The grand prince of Moscow was given a letter from the pope stating "the Eastern Church is now one with us" and giving much of the credit to "our most holy brother Isidor, your metropolitan... of all Russia and legate from the Apostolic Throne... We ask you in piety to receive this Metropolitan Isidor for his justice and for the good of the Church...". According to Simeon, "realizing the delusion of the metropolitan", the grand prince ordered Isidore to be "cast out from his spiritual rank" and, "for such soul-destroying heresy, to be expelled from the town of Moscow and from all his land". The chronicles say that three days later, Isidore was arrested and placed under supervision in the Chudov Monastery. The chroniclers of the grand prince wrote in their account that "the princes, the boyars and many others — and especially the Russian bishops — remained silent, slumbered and fell asleep," and it was not until "the divinely wise, Christ-loving sovereign, Grand Prince Vasily Vasilyevich... shamed Isidor and called him not his pastor and teacher, but a wicked and baneful wolf" did "all the bishops of Russia who were then in Moscow wake up, and the princes and boyars and grandees and the multitude of Christians come to their senses... and begin to call Isidor a heretic". According to John L. I. Fennell: "Clearly Simeon and the chroniclers distorted facts in their depiction of Isidor's reception in Moscow, colouring their accounts according to their prejudices." Fennell noted that between 19 March and 15 September 1441, when Isidore left Moscow, he was at some time recognized by Vasily II as the lawful metropolitan. The ''
Nikon Chronicle The ''Nikon Chronicle'' () is a compilation of Russian chronicles undertaken at the court of Ivan the Terrible in the mid-16th century. The compilation was named after Patriarch Nikon of Moscow, who owned a copy. In the 18th century, it was publi ...
'' and grand princely codex of 1479 both agree that on 15 September 1441, Isidor escaped with two of his disciples, Gregory and Afanasy. Isidore fled to Tver, where he was placed under house arrest by Boris of Tver, according to the chronicles of Pskov. Afterwards, he reached
Novogrudok Novogrudok or Navahrudak (; ; , ; ) is a town in Grodno Region, Belarus. It serves as the administrative center of Novogrudok District. As of 2025, it has a population of 27,624. In the Middle Ages, the city was ruled by King Mindaugas' son V ...
and then Rome. The grand princely codex of 1479 describes Isidore's "secret escape by night like a thief" and mentions that "Grand Prince Vasily Vasil'evich sent no one to bring him back, nor did he have any desire to hold him back". Vasily II wrote a letter to Patriarch Metrophanes II, which was never sent, requesting for a Russian candidate to be appointed as metropolitan. The letter mentions Isidore's return to Moscow, calling himself ''Legatus a latere'' and carrying before him "a Latin sculptured crucifix with hrist'stwo feet nailed with one nail", but not his imprisonment or escape. It also says Isidore "commemorated the pope" and "subjected us to the Roman Church and the Roman pope". The only action by Vasily it mentions is that he summoned a synod of six bishops, who concluded that "all Isidor's business.. is alien and different from the divine and holy canons". As a result, a decision was made to send envoys to Constantinople in order to request the appointment of a Russian metropolitan by "the God-loving bishops of our fatherland". Vasily II returned to power in February 1447 following a flare-up in the civil war and Jonah was finally appointed as metropolitan on 15 December 1448 by a council of Russian bishops. In 1458, Gregory the Bulgarian was chosen by the uniate patriarch of Constantinople as the new metropolitan of Kiev, but his legitmacy was rejected in Moscow. According to the hypothesis proposed by the Russian historian William Pokhlyobkin, it may have been Isidore who produced the first genuine recipe of Russian
vodka Vodka ( ; is a clear distilled beverage, distilled alcoholic beverage. Its varieties originated in Poland and Russia. Vodka is composed mainly of water and ethanol but sometimes with traces of impurities and flavourings. Traditionally, it is ...
while being detained in the Chudov Monastery. Pokhlyobin completed his ''Istoriya vodki'' ("A History of Vodka") after the communist government of Poland had allegedly sued the Soviet Union for exclusive rights to the word ''vodka''. According to Pokhlyobkin, his work was a success as a tribunal ruled in favor of the Soviets, based mostly on his research that "proved" that the Poles began making vodka after the Russians. However, Mark Lawrence Schrad noted that there is no evidence in the archives of the
Permanent Court of Arbitration The Permanent Court of Arbitration (PCA) is an intergovernmental organization headquartered at the Peace Palace, in The Hague, Netherlands. Unlike a judicial court in the traditional sense, the PCA provides administrative support in international ...
in
The Hague The Hague ( ) is the capital city of the South Holland province of the Netherlands. With a population of over half a million, it is the third-largest city in the Netherlands. Situated on the west coast facing the North Sea, The Hague is the c ...
of any such legal action by Poland. Subsequent writers have also criticized Pokhlyobkin's work, while some Russian historians have designated the birthdate of Russian vodka as early as the 13th century.


Later life

Before the
fall of Constantinople The Fall of Constantinople, also known as the Conquest of Constantinople, was the capture of Constantinople, the capital of the Byzantine Empire by the Ottoman Empire. The city was captured on 29 May 1453 as part of the culmination of a 55-da ...
in 1453, he subsidized the repair of fortifications at his own expense and was wounded in the early hours of the sack. He managed to escape the carnage by dressing up a dead body in his cardinal's robes. While the Turks were cutting off its head and parading it through the streets, the real cardinal was shipped off to Asia Minor with a number of insignificant prisoners as a slave, and later found safety in
Crete Crete ( ; , Modern Greek, Modern: , Ancient Greek, Ancient: ) is the largest and most populous of the Greek islands, the List of islands by area, 88th largest island in the world and the List of islands in the Mediterranean#By area, fifth la ...
. He composed a series of letters describing the events of the siege. He warned of the danger of further expansion of the Turks in the multiple letters and even seems to be the earliest eyewitness to have compared
Mehmed II Mehmed II (; , ; 30 March 14323 May 1481), commonly known as Mehmed the Conqueror (; ), was twice the sultan of the Ottoman Empire from August 1444 to September 1446 and then later from February 1451 to May 1481. In Mehmed II's first reign, ...
with
Alexander the Great Alexander III of Macedon (; 20/21 July 356 BC – 10/11 June 323 BC), most commonly known as Alexander the Great, was a king of the Ancient Greece, ancient Greek kingdom of Macedonia (ancient kingdom), Macedon. He succeeded his father Philip ...
. He made his way back to Rome in 1455, and was made
Bishop of Sabina A bishop is an ordained member of the clergy who is entrusted with a position of Episcopal polity, authority and oversight in a religious institution. In Christianity, bishops are normally responsible for the governance and administration of di ...
, presumably adopting the Latin Rite.
Pope Pius II Pope Pius II (, ), born Enea Silvio Bartolomeo Piccolomini (; 18 October 1405 – 14 August 1464), was head of the Catholic Church and ruler of the Papal States from 19 August 1458 to his death in 1464. Aeneas Silvius was an author, diplomat, ...
(1458–64) later gave him two titles successively, those of Latin Patriarch of Constantinople and Archbishop of Cyprus, neither of which he could convert into real jurisdiction. He was
Dean of the Sacred College of Cardinals The dean of the College of Cardinals () presides over the College of Cardinals in the Catholic Church, serving as ('first among equals'). The position was established in the 12th century. He always holds the rank of a cardinal bishop and is as ...
from October 1461. He died on 27 April 1463.


See also

*
Greek scholars in the Renaissance The migration waves of Byzantine Greeks, Byzantine Greek scholars and émigrés in the period following the fall of Constantinople, end of the Byzantine Empire in 1453 are considered by many scholars key to the revival of Classics, Greek stu ...


Notes


References


Sources

* * * *


Further reading

*Histories of the Council of Florence describe the adventures of Cardinal Isidore. * Sergey F. Dezhnyuk, "Council of Florence: The Unrealized Union", 2017. * Ludwig Pastor, ''Geschichte der Paepste'', I (3rd and 4th ed., Freiburg im Br., 1901), 585, 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


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