A 37-volume Roman History spanning the years 1204 to 1359 stands as the primary documentary accomplishment of Nicephorus Gregoras. Born in 1295 at Heraclea Pontica, he moved to Constantinople early in life, where he became a prominent figure in the Byzantine Empire as an astronomer, historian, theologian, and philosopher.
Early Career and Astronomical Contributions
Raised by his uncle, the Bishop of Heraclea, Gregoras arrived in Constantinople to serve as chartophylax under Emperor Andronicus II Palaeologus. He studied astronomy under Theodore Metochites, eventually applying Ptolemy's Handy Tables and Almagest to calculate celestial events. Most notably, he predicted a total solar eclipse occurring on 16 July 1330 with exactitude. In 1326, he proposed calendar reforms that were rejected at the time but bore striking similarities to those implemented centuries later by Gregory XIII.
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Following the 1328 deposition of Andronicus II by his grandson, Andronicus III Palaeologus, Gregoras entered a period of private life. Despite his earlier withdrawal, he regained royal favor under the new emperor, who tasked him with negotiating a church union with ambassadors sent by Pope John XXII in 1333. By 1346, however, his focus shifted to the Hesychast controversy. He vehemently challenged the doctrines of Gregorius Palamas, failing to sway the synod of 1351, which eventually declared his own positions heretical.
Later Life and Literary Legacy
Refusing to recant his theological stance against Palamas, Gregoras endured two years of confinement in a monastery. Even after his release in 1354, he continued his public denunciations, ultimately damaging his relationship with John VI Cantacuzene. He spent his final years confined to the Chora Monastery, where he authored books of his Roman History dedicated to his theological objections. Beyond history, his unpublished writings include funeral orations, commentaries on the wanderings of Odysseus, and extensive scientific work on the astrolabe.
Fast facts
- Born: 1295, Heraclea Pontica
- Died: 1360, Constantinople
- Citizenship: Byzantine Empire
- Occupations: Astronomer, historian, theologian, philosopher, astrologer
- Known for: 37-volume Roman History
- Key achievement: Predicted 1330 total solar eclipse
- Languages: Ancient Greek, medieval Greek
Questions readers ask
What was the result of Gregoras's calendar reform proposal?
He proposed calendar changes in 1326, but the emperor refused to implement them due to fears of social unrest.
Why was Gregoras confined to a monastery?
He was imprisoned and later confined to the Chora Monastery for his staunch opposition to the doctrines of Gregorius Palamas during the Hesychast controversy.
Achievements
- Fields of research: astronomy, history, occultism and philosophy
