1099 Crusaders take Jerusalem
1122 Concordat of Worms (frees church from secular tutelage)
1122-23 Peter Abelard (born 1079) writes Sic et Non
1123 First Lateran Council
1125-1153 St. Bernard's career at Clairvaux and virtual domination of western church
1126-1151 At Toledo, Dominicus Gundissalinus and others begin translating Islamic and Judaic writings into Latin (from Spanish translations)
c1130 Abelard writes Scito teipsum (Know Thyself) (dies, 1142)
1137 Hildegard of Bingen becomes Abbess at Disibodenberg
1139 Second Lateran Council
c1140 Concordantia discordantium canonum or Decretum Gratiani (Decrees written by Gratian) written by Gratian at Bologna
1158 First Charter of the University of Bologna
1159 John of Salisbury writes Metalogicon and Policratus (addressed to Thomas Becket)
1170 founding of the University of Paris
1179 Third Lateran Council
1187 Saladin (Salah ad-Din) of Egypt unites the Moslems and takes back Jerusalem
1190 Moses Maimonides (born 1135) finishes Guide for the Perplexed
1198 Averroes (Ibn Rushd) (of Cordoba, born 1126) dies
1198-1215 Papacy of Innocent III (beginning of "Pontifical Theocracy")
1204 Maimonides dies
1207 Francis of Assisi (1182-1226) disowns himself of his patrimony; founds the Fransicans
1215 First Statutes for the University of Paris
1215 Fourth Lateran Council; King John signs the Magna Carta; Robert Grosseteste made first chancellor of Oxford University
1216 St. Dominic (1171-1221) founds the Dominicans
1220 Frederick II crowned emperor by Pope Honorius III
1236 Cordoba falls, great Spanish Islamic center of learning
1245 First Council of Lyon; Frederick II deposed
1253-1257 St. Bonaventure (John Fidenza) is made master of the Franciscan School in Paris
1250 Frederick II dies; beginning of political collapse of Europe
1254 Albert the Great (1200-1280) begins commenting on the works of Aristotle, Boethius and Pseudo-Dionysius; Aquinas is one of his pupils/assistants
1256-59 Thomas Aquinas (b1224) a Regent Master at University of Paris
1259 Bonaventure writes "Journey of the Mind to God"
1260 Thomas begins the Summa Contra Gentiles (finished by 1267) and the Summa Theologiae (unfinished)
1266 Roger Bacon (b1214) finishes his Opus Maius ("Large Work")
1269-1272 Second term as Regent Master at Paris for Thomas
1270 Siger of Brabant (d1282) condemned for his Averroism
1274 Thomas Aquinas dies travelling to Second Council of Lyon
1276-1292 Henry of Ghent (1219-1293) teaching at Paris
1277 Condemnation of 1277 by bishop of Paris (many of Thomas' positions are officially condemned)
1278 Roger Bacon imprisoned (b1292, shortly after release)
1296 Last Crusade ends