    __notoc__ year 1121 (mcxxi) was a common year starting on saturday (link will display the full calendar) of the julian calendar. == events == * august 12 &ndash; battle of didgori: king david the builder of georgia, with 55,600 troops, defeats the 300,000-strong muslim coalition forces at mount didgori, in eastern georgia. * december 25 (christmas day) &ndash; the praemonstratensian order (norbertines) is formed when a group of canons make solemn vows at prÃ©montrÃ©. * a provincial synod held at soissons condemns peter abelard's writings on the trinity. abelard writes sic et non. * completion of the third and largest church at cluny abbey. * reading abbey is founded in england. * a large rebellion takes place in cÃ³rdoba, spain, against the ruling almoravids. == births == * == deaths == * december 11 &ndash; al-afdal shahanshah, fatimid caliph of egypt (b. 1066) * william of champeaux, french philosopher * zhou tong, archery teacher and second military arts tutor of song dynasty general yue fei == references ==   da:1120'erne#1121
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