Callistus II Xanthopoulos or Xanthopulus ( grc-x-medieval, Κάλλιστος Β' Ξανθόπουλος; ? – after 1397) was a

Byzantine The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...

Hesychast monk and spiritual writer who reigned as

Ecumenical Patriarch of Constantinople The ecumenical patriarch ( el, Οἰκουμενικός Πατριάρχης, translit=Oikoumenikós Patriárchēs) is the archbishop of Constantinople (Istanbul), New Rome and '' primus inter pares'' (first among equals) among the heads of th ...

in 1397. He was Patriarch through the reign of the

Byzantine Emperor This is a list of the Byzantine emperors from the foundation of Constantinople in 330 AD, which marks the conventional start of the Eastern Roman Empire, to its fall to the Ottoman Empire in 1453 AD. Only the emperors who were recognized as le ...

Manuel II Palaiologos Manuel II Palaiologos or Palaeologus ( gr, Μανουὴλ Παλαιολόγος, Manouēl Palaiológos; 27 June 1350 – 21 July 1425) was Byzantine emperor from 1391 to 1425. Shortly before his death he was tonsured a monk and received the na ...

, and through his short Patriarchal reign

Constantinople la, Constantinopolis ota, قسطنطينيه , alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth (Old Norse), Tsargrad ( Slavic), Qustantiniya (Arabic), Basileuousa ("Queen of Cities"), Megalopolis (" ...

was under siege by the Ottoman Sultan Bayezid I. Within the Orthodox Church, his memory is celebrated on

22 November Events Pre-1600 * 498 – After the death of Anastasius II, Symmachus is elected Pope in the Lateran Palace, while Laurentius is elected Pope in Santa Maria Maggiore. * 845 – The first duke of Brittany, Nominoe, defeats the Fra ...

.Great Synaxaristes:
Ὁ Ὅσιος Κάλλιστος ὁ Β’ Πατριάρχης Κωνσταντινουπόλεως
'' 22 Νοεμβρίου. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ. His surname indicates that he was from the monastery of Xanthopoulos. The majority of Patriarchs in the 14th century were monks in the Hesychast tradition.

References

Sources

* Hunter H.D.,

, * Hussey, J.M.. ''The Orthodox Church in the Byzantine Empire''. Oxford: University Press, 1986. 14th-century births 1397 deaths 14th-century patriarchs of Constantinople Byzantine saints of the Eastern Orthodox Church Philokalia {{EasternOrthodoxy-bishop-stub