Crusades Timeline By Mr. Gerndt 1093 Alexius Comnenus asks for help 1095 Arabs take Jerusalem 1095 Pope Urban Responds 1096 First Crusade 1096-1099 1147 Second Crusade 1147-1149 1189 Third Crusade 1189-1192 1202 Fourth Crusade 1202-1204 1212 Children's Crusade 1453 Muslim Turks Take over Byzantine