12th Century Timeline
- 1100 William II killed in New Forest
- 1100 The Tower of London welcomes its first prisoner
- 1100-1200 The German Stammheim Missal
was created
- 1100-1135 Rule of King Henry I
- 1106 Henry IV, Holy Roman Emperor, died
- 1106 Henry I of England defeated his brother Robert Curthose at the Battle of Tinchebrai reuniting England
- 1111 In a bad mood, Henry V of Germany abducts Pope Paschal II
- 1117 Thomas Becket born
- 1117 Abelard gets Heloise pregnant
- 1117 First Leper Hospital in London
- 1119 Founding of The Knights Templar
- 1122 Eleanor of Aquitaine born
- 1130 The Jewish Cardinal Pietro Pierleone elected anti-pope Anacletus II
- 1130 The first travel book was written on the Camino de Santiago leading eventually to the worst book on the Camino de Santiago by Shirley Maclaine
- 1135 King Henry I of England Dies
- 1135-1154 The Great Anarchy Period of Civil War in England
- 1136 Abbot Suger begins building Saint-Denis
- 1138 The Anti-Pope Victor IV overthrows himself in favor of Innocentius II
- 1138 The English defeat the Scots at Cowton Moor
- 1139 The countries of northern Europe ban incendiary weapons
- 1142 Pierre Abelard born
- 1145-1148 The Second Crusade
- 1153 Bernard of Clairvaux dies
- 1154 Thomas Becket made Chancellor to the King, Henry II
- 1154-1189 Rule of King Henry II
- 1159 John of Salisbury writes The Metalogicon
- 1169 The conquest of Ireland begins
- 1170 Thomas Becket is killed
- 1178 The Anti-Pope Callistus III give pope title to Alexander III
- 1179 Hildegard of Bingen dies
- 1182 Francis of Assisi born
- 1189 The first mayor of London is elected
- 1189-1199 Rule of King Richard I (Richard the Lionheart)
- 1189-1192 The Third Crusade
- 1190 The Crusaders massacre the Jews of York
- 1190 The Crusaders massacre the Jews in Bury St. Edmonds
- 1191 King Richard I (1157-1199), Richard the Lionheart, executes 2,700-3,000 Muslim prisoners in Acre
- 1194 Chartres Cathedral destroyed by fire
- 1199 Prince John made King of England
