suddenly collapses, in one of the largest historical rock slope failures. December – William of Villehardouin, Latin ruler of the Principality of Achaea, captures Monemvasia – last remaining Byzantine outpost on the Peloponnese. December – Ferdinand III issues an edict to expel the Almohads out of Seville. Many Muslims sail to North Africa and others travel to Granada in Al-Andalus. By topic Cities and Towns August 25 – The Dutch city of Ommen receives city rights and fortification rights from Otto III, archbishop of Utrecht, after the town has been pillaged by a local robber baron. Religion April 26 – The Gothic chapel Sainte-Chapelle (or Holy Chapel) is completed and consecrated in Paris. Louis IX moves the relics of the True Cross and Holy Lance to the chapel with great ceremony. August 15 – The foundation stone of Cologne Cathedral is laid by Archbishop Konrad von Hochstaden, after the older cathedral is burned down on April 30 (construction is completed in 1880). Pope Innocent IV grants the Croatians of southern Dalmatia permission to use their own language and script in the Roman Rite liturgy (see Glagolitic alphabet). Births July 21 – Bogo de Clare, English cleric and writer (d. 1294) December 22 – Ichijō Ietsune, Japanese nobleman (d. 1293) Abu Said Faraj, Andalusian advisor and governor (d. 1320) Angela of Foligno, Italian nun, mystic and writer (d. 1309) Blanche of Artois, queen and regent of Navarre (d. 1302) Gao Kegong (or Fang Shan), Chinese painter (d. 1310) Hōjō Akitoki, Japanese military leader and poet (d. 1301) Isabella of Aragon, queen consort of France (d. 1271) Kujō Tadanori, Japanese nobleman and regent (d. 1332) Peter John Olivi, French monk and theologian (d. 1298) Yeshe Rinchen, Tibetan Imperial Preceptor (d. 1294) Zaynab bint al-Kamal, Syrian female scholar (d. 1339) Deaths January 4 – Sancho II (the Pious), king of Portugal (b. 1209) January 18 – Fujiwara no Ritsushi, Japanese empress (b. 1192) February 1 – Henry II, Dutch nobleman and knight (b. 1207) February 9 – Al-Adil II, Ayyubid ruler of Egypt and Damascus February 18 – Taddeo da Suessa, Italian jurist and diplomat February 25 – Bolesław I of Masovia, Polish prince (b. 1208) March 27 – Maud Marshal, English noblewoman (b. 1192) April 9 – Hugh I of Châtillon, French nobleman and knight April 20 – Güyük Khan (or Kuyuk), Mongol emperor (b. 1206) June 19 – Otto III of