Before July – Battle of Settepozzi: A Byzantine-Genoese fleet (some 50 galleys) is routed by the Venetians near Spetses in the Argolic Gulf, who capture four ships and inflict considerable casualties. Later, the Genoese that survive the battle managed to capture Chania on Crete. They receive orders to avoid direct confrontations with the Venetian fleet, but instead are engaged in raiding against the Venetian merchant convoys in the Euripus Strait.[1]
Summer – Emperor Michael VIII Palaiologos sends a Byzantine expeditionary force (some 3,500 men) led by his half-brother, Constantine Palaiologos, to the Peloponnese in southern Greece. The army is transported to Monemvasia on Genoese ships, while a small Byzantine fleet is sent to harass the Latin island holdings in Euboea and the Cyclades. After arriving at Monemvasia, Constantine lays siege to Sparta, while the Byzantine fleet seizes the southern coast of Laconia.[2]
Battle of Prinitza: Constantine Palaiologos marches the Byzantine army up the rivers Eurotas and Alfeios towards the Achaean capital, Andravida. At a narrow pass at Prinitza (near Ancient Olympia) in Elis, the Byzantines are attacked by Achaean forces (some 300 horsemen) under John of Katavas, who inflict a resounding defeat upon them; many Byzantine soldiers are killed. Constantine himself barely escapes with his life, and flees with the remainder of his army to the safety of Mystras.[3][4]
September 12 – Mindaugas (or Mendog), the only Christian king of Lithuania, is assassinated by his cousin Treniota. The country reverts to paganism and loses its status as a kingdom. Treniota usurps the throne (until 1264).
April – Simon de Montfort, 6th Earl of Leicester, newly returned from exile, takes control of southern England.[8] In early May he summons a meeting of rebel barons at Oxford.
April 4 – Egyptian forces led by Sultan Baibars (or Abu al-Futuh) attack Acre; there is severe fighting outside the walls, in which the seneschal, Geoffrey of Sergines, is badly wounded. Baibars is not yet ready to besiege the city and begins a major campaign to eliminate the Crusader kingdom of Jerusalem, the county of Tripoli and the principality of Antioch.[10][11]
The Lord Edward, son and heir of Henry III of England, seizes £10,000 which had been deposited to the trust of the Knights Templar in London by foreign merchants and English magnates.[14]
The Bonsignori firm gains the full market of the transfer of fiscal revenue from the papal estates to Rome.[15]
^Lane, Frederic Chapin (1973). Venice, A Maritime Republic, p. 77. Baltimore, Maryland: Johns Hopkins University Press. ISBN0-8018-1445-6.
^Bartusis, Mark C. (1997). The Late Byzantine Army: Arms and Society, 1204–1453, p. 49. Philadelphia, Pennsylvania: University of Pennsylvania Press. ISBN0-8122-1620-2.
^Bartusis, Mark C. (1977). The Late Byzantine Army: Arms and Society, 1204–1453, p. 50. Philadelphia, Pennsylvania: University of Pennsylvania Press. ISBN0-8122-1620-2.
^Longnon, Jean (1969). The Frankish States in Greece, 1204–1311, pp. 253–254. In Wolff, Robert Lee; Hazard, Harry W. (eds.). A History of the Crusades, Volume II: The Later Crusades, 1189–1311, pp. 234–275. University of Wisconsin Press. ISBN0-299-06670-3.
^Helle, Knut (1995). Under kirke og kongemakt: 1130-1350, p. 196. Aschehougs Norgeshistorie. Vol. 3. Aschehoug. ISBN8203220312.
^McDonald, Russell Andrew (1997). The Kingdom of the Isles: Scotland's Western Seaboard, c. 100–c. 1336, p. 115. Scottish Historical Monographs, Tuckwell Press. ISBN1-898410-85-2.
^Picard, Christophe (2000). Le Portugal musulman (VIIIe-XIIIe siècle. L'Occident d'al-Andalus sous domination islamique. Paris: Maisonneuve & Larose. p. 110. ISBN2-7068-1398-9.
^ abcPalmer, Alan; Veronica (1992). The Chronology of British History. London: Century Ltd. pp. 86–88. ISBN0-7126-5616-2.
^Willis-Bund, J W; Page, William, eds. (1924). "The city of Worcester: Introduction and borough". A History of the County of Worcester: Volume 4. London: British History Online, pp. 376–390. Retrieved: 20 May 2018.
^Ferris, Eleanor (1902). "The Financial Relations of the Knights Templars to the English Crown". American Historical Review. 8 (1). doi:10.2307/1832571. JSTOR1832571.
^Catoni, Giuliano. "Bonsignori". Dizionario Biografico degli Italiani. Retrieved December 20, 2011.
