without resistance. In the autumn, Genghis crosses the Helan Mountains, and in November he lays siege to Lingwu. Meanwhile, Emperor Xian Zong dies and is succeeded by his nephew Mo (or Li Xian). Middle East March 9 – Khwarezmian forces under Sultan Jalal al-Din Mangburni capture Tbilisi, capital of the Kingdom of Georgia, killing many of its Christian inhabitants. Asia October 30 – Trần Thủ Độ, head of the Trần dynasty of Vietnam, forces Lý Huệ Tông, last emperor of the Lý dynasty, to commit suicide. By topic Art and Culture Brother Robert writes the Old Norse Saga Af Tristram ok Ísodd, one of the rare fully surviving versions of the legend of Tristan and Iseult. Astronomy March 4 – Just before dawn, a great conjunction between Saturn and Jupiter occurs. Religion March 26 – Emperor Frederick II issues the Golden Bull of Rimini, in which he grants Teutonic Knights the right to all of the lands they will get during the mission in Prussia; he also considers himself a senior of the Teutonic Order and Poland, as well as the universal ruler of Christian Europe. September 11 – The Catholic Church practice of eucharistic adoration among lay people formally begins in Avignon, Provence. The Carmelite Order is approved by Pope Honorius III in the bull Ut vivendi normam. Births April 16 – Mugaku Sogen, Chinese monk and adviser (d. 1286) June 21 – Bolesłaus V (the Chaste), Polish nobleman (d. 1279) November 2 – Isabella de Clare, English noblewoman (d. 1264) Amato Ronconi, Italian nobleman, monk and hermit (d. 1292) Angelo da Foligno (or Conti), Italian cleric and priest (d. 1312) Ata-Malik Juvayni, Persian governor and historian (d. 1283) Bai Renfu (or Bai Pu), Chinese poet and playwright (d. 1306) Bar Hebraeus, Syrian scholar, historian and bishop (d. 1286) Blanche of Navarre (or Champagne), duchess of Brittany (d. 1283) Charles I, French nobleman and son of Louis VIII (d. 1285) Dietrich VI, German nobleman and knight (d. 1275) Gertrude of Austria, Austrian noblewoman (d. 1288) Herman VI, German nobleman and knight (d. 1250) Maria of Brabant, German noblewoman (d. 1256) Ulrich I (the Founder), German nobleman (d. 1265) Deaths March 7 – William Longespée, English nobleman and knight (b. 1176) May 2 – Amaury I de Craon, French nobleman and knight (b. 1170) May 10 – Beatrice d'Este, Italian Benedictine nun and saint (b. 1192) June 5 – Henry