The 1200s began on January 1, 1200, and ended on December 31, 1209.
The 1260s is the decade starting January 1, 1260 and ending December 31, 1269.
Year 1272 (MCCLXXII) was a leap year starting on Friday of the Julian calendar.
Year 1217 (MCCXVII) was a common year starting on Sunday of the Julian calendar.
Year 1203 (MCCIII) was a common year starting on Wednesday of the Julian calendar. It was also the first year to have all digits different from each other since 1098.
Year 1201 (MCCI) was a common year starting on Monday of the Julian calendar.
Year 1261 (MCCLXI) was a common year starting on Saturday of the Julian calendar.
Year 1264 (MCCLXIV) was a leap year starting on Tuesday of the Julian calendar.
Year 1266 (MCCLXVI) was a common year starting on Friday of the Julian calendar.
The Principality of Achaea or Principality of Morea was one of the three vassal states of the Latin Empire, which replaced the Byzantine Empire after the capture of Constantinople during the Fourth Crusade. It became a vassal of the Kingdom of Thessalonica, along with the Duchy of Athens, until Thessalonica was captured by Theodore, the despot of Epirus, in 1224. After this, Achaea became for a while the dominant power in Greece.
The Despotate of the Morea or Despotate of Mystras was a province of the Byzantine Empire which existed between the mid-14th and mid-15th centuries. Its territory varied in size during its existence but eventually grew to include almost all the southern Greek peninsula now known as the Peloponnese, which was known as the Morea during the medieval and early modern periods. The territory was usually ruled by one or more sons of the current Byzantine emperor, who were given the title of despotes. Its capital was the fortified city of Mystras, near ancient Sparta, which became an important centre of the Palaiologan Renaissance.
The Palaiologan army refers to the military forces of the Byzantine Empire under the rule of the Palaiologos dynasty, from the late 13th century to its final collapse in the mid-15th century. The army was a direct continuation of the forces of the Empire of Nicaea, which itself was a fractured component of the formidable Komnenian army of the 12th century. Under the first Palaiologan emperor, Michael VIII, the army's role took an increasingly offensive role whilst the naval forces of the empire, weakened since the days of Andronikos I Komnenos, were boosted to include thousands of skilled sailors and some 80 ships. Due to the lack of land to support the army, the empire required the use of large numbers of mercenaries.
Alexios Doukas Philanthropenos was a Byzantine nobleman and notable general. A relative of the ruling Palaiologos dynasty, he was appointed commander-in-chief in Asia Minor in 1293 and for a time re-established the Byzantine position there, scoring some of the last Byzantine successes against the Turkish beyliks. In 1295 he rose up in revolt against Andronikos II Palaiologos, but was betrayed and blinded. Nothing is known of him until 1323, when he was pardoned by Andronikos II and sent again against the Turks, relieving a siege of Philadelphia, allegedly by his mere appearance. He was then named briefly governor of Lesbos in 1328, and again in 1336, when he recovered the island's capital from Latin occupation. He ruled the island thereafter, probably until his death in the 1340s.
Constantine Palaiologos or Palaeologus was a Byzantine nobleman and the younger half-brother of the Byzantine Emperor Michael VIII Palaiologos.
The Treaty of Nymphaeum was a trade and defense pact signed between the Empire of Nicaea and the Republic of Genoa in Nymphaion in March 1261. This treaty would have a major impact on both the restored Byzantine Empire and the Republic of Genoa that would later dictate their histories for several centuries to come.
The Battle of Prinitza was fought in 1263 between the forces of the Byzantine Empire, marching to capture Andravida, the capital of the Latin Principality of Achaea, and a small Achaean force. The Achaeans launched a surprise attack on the greatly superior and overconfident Byzantine force, defeated and scattered it, saving the principality from conquest.
The Battle of Makryplagi or Makry Plagi was fought between the forces of the Byzantine Empire, and the Latin Principality of Achaea. The Byzantines had been weakened and demoralized by the defection of their numerous Turkish mercenaries to the Achaeans. At Makryplagi, the Byzantines suffered a heavy defeat, which together with their defeat at the Battle of Prinitza the previous year ended their attempted reconquest of the Morea.
The Battle of Settepozzi was fought in the first half of 1263 off the island of Settepozzi between a Genoese–Byzantine fleet and a smaller Venetian fleet.
The Reconquest of Constantinople (1261) was the recapture of the city of Constantinople 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 Latin Empire installed by the Fourth Crusade in 1204.
In 1268, the Byzantine Empire and the Republic of Venice agreed to temporarily end the hostilities which had erupted after the Byzantine recovery of Constantinople by Emperor Michael VIII Palaiologos in 1261.
