-
Period: Apr 11, 1073 to Apr 11, 1085
Pope Gregory VII
-
Period: Apr 11, 1075 to Apr 11, 1122
Investiture Controversy
-
Apr 11, 1095
Urban II calls First Crusade
-
Period: Apr 11, 1198 to Apr 11, 1216
Pope Innocent III
-
Apr 11, 1204
Fourth Crusade takes Constantinople
-
Apr 11, 1209
Franciscan Order Established