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1245

Year 1245 (MCCXLV) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar.

• Winter – Siege of Jaén: Castilian forces under King Ferdinand III (the Saint) besiege the Moorish-held city of Jaén. During the siege Moorish knights sally out and manage to capture a Castilian supply caravan. Meanwhile, Ferdinand tries to launch attacks on the various city gates, but all are ineffective.
• In witness of the toll taken by war and fiscal pressure in the Kingdom of Castile, the region of Segovia is described this year as depopulated and sterile.^[1]

• King Henry III starts the work of rebuilding Westminster Abbey, as a tribute to Edward the Confessor.

• April – Egyptian forces under As-Salih Ayyub besiege the city of Damascus. After six months, As-Salih Ismail, ruler of Damascus, surrenders to Ayyub in return for a vassal-principality, consisting of Baalbek and the Hauran. Ayyub is awarded the title of sultan by Caliph Al-Musta'siminBaghdad.^[2]

• February 21 – Thomas, bishop of Turku (modern Finland), is granted resignation by Pope Innocent IV. He admits to committing several felonies, such as torturing and forging a papal letter.
• April 16 – Innocent IV sends Giovanni da Pian del Carpine (accompanied by Stephen of Bohemia) to the Mongol court at Karakorum, suggesting that the Mongols convert to Christianity.^[3]
• June 28 – First Council of Lyon: In a general church council held at Lyon, Innocent IV declares Emperor Frederick II excommunicated and deposed. He proclaims the Seventh Crusade.^[4]

• January 16 – Edmund Crouchback, son of Henry III (d. 1296)
• May 1 – Philip III (the Bold), king of France (d. 1285)
• November 14 – Sang Sapurba, Indonesian ruler (d. 1316)
• Antony Bek (orBeck), English bishop and patriarch (d. 1311)
• Araniko (orAnige), Nepalese architect and painter (d. 1306)
• Eric of Brandenburg, archbishop of Magdeburg (d. 1295)
• Fujiwara no Saneko, Japanese empress consort (d. 1272)
• Giovanna da Signa, Italian miracle worker and saint (d. 1307)
• Kikuchi Takefusa, Japanese nobleman and samurai (d. 1285)
• Kunigunda of Halych, queen consort of Bohemia (d. 1285)
• Ma Duanlin, Chinese encyclopaedist and politician (d. 1322)
• Nichirō, Japanese Buddhist disciple and scholar (d. 1320)
• Rinaldo da Concorezzo, Italian priest and archbishop (d. 1321)
• Roger Bigod, English nobleman and Lord Marshal (d. 1306)
• Thomas de Berkeley (the Wise), English nobleman (d. 1321)
• Yahballaha III, patriarch of the Church of the East (d. 1317)
• Ziemomysł of Kuyavia, Polish ruler of Bydgoszcz (d. 1287)

• January 27 – Ralph of Maidstone, bishop of Hereford
• January 28 – Giovanni Colonna, Italian cardinal (b. 1170)
• February 8 – John of la Rochelle, French theologian (b. 1200)
• February 15 – Baldwin de Redvers, English nobleman (b. 1217)
• March 22 – Roger I of Fézensaguet, French nobleman (b. 1190)
• July 22 – Kolbeinn ungi Arnórsson, Icelandic chieftain (b. 1208)
• August 19 – Ramon Berenguer IV, Spanish nobleman (b. 1198)
• August 21 – Alexander of Hales, English theologian (b. 1185)
• November 27 – Walter Marshal, English nobleman (b. 1209)
• December 4 – Christian of Oliva, bishop of Prussia (b. 1180)
• Adam of Harcarse, Scottish Cistercian priest and abbot
• Beatrice d'Este, queen consort of Hungary (b. 1215)
• Cletus Bél, Hungarian prelate, bishop and chancellor
• Diya al-Din al-Maqdisi, Syrian scholar and writer (b. 1173)
• Fujiwara no Tadataka, Japanese regent and monk (b. 1163)
• Guillaume le Vinier, French composer and poet (b. 1190)
• Ibn al-Salah, Syrian scholar, imam and writer (b. 1181)
• Isabel de Bolebec, English noblewoman and co-heiress
• Rusudan of Georgia, queen consort of Georgia (b. 1194)