| Millennium: | 2nd millennium |
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| 1261 by topic |
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| Establishments – Disestablishments |
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| 1261 in poetry |
Year 1261 ( MCCLXI ) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar.
The 1200s began on January 1, 1200, and ended on December 31, 1209.
The 970s decade ran from January 1, 970, to December 31, 979.
Year 1277 (MCCLXXVII) was a common year starting on Friday of the Julian calendar.
Year 1320 (MCCCXX) was a leap year starting on Tuesday of the Julian calendar.
The 1260s is the decade starting January 1, 1260 and ending December 31, 1269.
The 1270s is the decade starting January 1, 1270, and ending December 31, 1279.
Year 1302 (MCCCII) was a common year starting on Monday of the Julian calendar.
Year 1275 (MCCLXXV) was a common year starting on Tuesday of the Julian calendar.
Year 1201 (MCCI) was a common year starting on Monday of the Julian calendar.
Year 1264 (MCCLXIV) was a leap year starting on Tuesday of the Julian calendar.
Year 1281 (MCCLXXXI) was a common year starting on Wednesday of the Julian calendar.
Michael VIII Palaiologos or Palaeologus reigned as Byzantine emperor from 1261 until his death in 1282, and previously as the co-emperor of the Empire of Nicaea from 1259 to 1261. Michael VIII was the founder of the Palaiologan dynasty that would rule the Byzantine Empire until the Fall of Constantinople in 1453. He recovered Constantinople from the Latin Empire in 1261 and transformed the Empire of Nicaea into a restored Byzantine Empire. His reign saw considerable recovery of Byzantine power, including the enlargement of the Byzantine army and navy. It also included the reconstruction of the city of Constantinople, and the increase of its population. His re-establishment of the University of Constantinople contributed to the Palaeologan Renaissance, a cultural flowering between the 13th and 15th centuries.
The Latin Empire, also referred to as the Latin Empire of Constantinople, was a feudal Crusader state founded by the leaders of the Fourth Crusade on lands captured from the Byzantine Empire. The Latin Empire was intended to replace the Byzantine Empire as the Western-recognized Roman Empire in the east, with a Catholic emperor enthroned in place of the Eastern Orthodox Roman emperors. The main objective of the Latin Empire was planned by Venice, which promoted the creation of this state for their self-benefit.
The Battle of Pelagonia or Battle of Kastoria took place in early summer or autumn 1259, between the Empire of Nicaea and an anti-Nicaean alliance comprising Despotate of Epirus, Kingdom of Sicily and the Principality of Achaea. It was a decisive event in the history of the Eastern Mediterranean, ensuring the eventual reconquest of Constantinople and the end of the Latin Empire in 1261.
William of Villehardouin was the fourth prince of Achaea in Frankish Greece, from 1246 to 1278. The younger son of Prince Geoffrey I, he held the Barony of Kalamata in fief during the reign of his elder brother Geoffrey II. William ruled Achaea as regent for his brother during Geoffrey's military campaigns against the Greeks of Nicaea, who were the principal enemies of his overlord, the Latin Emperor of Constantinople Baldwin II. William succeeded his childless brother in the summer of 1246. Conflicts between Nicaea and Epirus enabled him to complete the conquest of the Morea in about three years. He captured Monemvasia and built three new fortresses, forcing two previously autonomous tribes, the Tzakones and Melingoi, into submission. He participated in the unsuccessful Egyptian crusade of Louis IX of France, who rewarded him with the right to issue currency in the style of French royal coins.
John I Doukas, Latinized as Ducas, was an illegitimate son of Michael II Komnenos Doukas, Despot of Epirus in c. 1230–1268. After his father's death, he became ruler of Thessaly from c. 1268 to his own death in 1289. From his father's family he is also inaccurately known as John Angelos.
Alexios Komnenos Strategopoulos was a Byzantine aristocrat and general who rose to the rank of megas domestikos and Caesar. Distantly related to the Komnenian dynasty, he appears in the sources already at an advanced age in the early 1250s, leading armies for the Empire of Nicaea against Epirus. After falling out of favour and being imprisoned by Theodore II Laskaris, Strategopoulos sided with the aristocrats around Michael VIII Palaiologos, and supported him in his rise to the throne after Theodore II's death in 1258. He participated in the Pelagonia campaign in 1259, going on to capture Epirus, but his successes were undone in the next year and he was captured by the Epirotes. Released after a few months, he led the unexpected reconquest of Constantinople from the Latin Empire in July 1261, restoring the Byzantine Empire. He was captured again by the Epirotes in the next year and spent several years in captivity in Italy, before being released. He retired from public affairs and died in the early 1270s.
The siege of Constantinople (1235) was a joint Bulgarian–Nicaean siege on the capital of the Latin Empire. Latin emperor John of Brienne was besieged by the Nicaean emperor John III Doukas Vatatzes and Tsar Ivan Asen II of Bulgaria.
The Reconquest of Constantinople was the recapture of the city of Constantinople in 1261 by the forces of the Empire of Nicaea, leading to the re-establishment of the Byzantine Empire under the Palaiologos dynasty, after an interval of 57 years where the city had been the capital of the occupying Latin Empire that had been installed by the Fourth Crusade in 1204.
The Nicaean–Latin wars were a series of wars between the Latin Empire and the Empire of Nicaea, starting with the dissolution of the Byzantine Empire by the Fourth Crusade in 1204. The Latin Empire was aided by other Crusader states established on Byzantine territory after the Fourth Crusade, as well as the Republic of Venice, while the Empire of Nicaea was assisted occasionally by the Second Bulgarian Empire, and sought the aid of Venice's rival, the Republic of Genoa. The conflict also involved the Greek state of Epirus, which also claimed the Byzantine inheritance and opposed Nicaean hegemony. The Nicaean reconquest of Constantinople in 1261 AD and the restoration of the Byzantine Empire under the Palaiologos dynasty did not end the conflict, as the Byzantines launched on and off efforts to reconquer Southern Greece and the Aegean islands until the 15th century, while the Latin powers, led by the Angevin Kingdom of Naples, tried to restore the Latin Empire and launched attacks on the Byzantine Empire.