Parents
Spouse
Children
1117
| 1117 • The earliest use of a compass for navigational purposes is recorded. |
1173
Dec 23
Age: 57y
birth of childLouis I Wittelsbach Kelheim, Bavaria ⇓ 1 Source ⇓ |
| 1173 • Algebraic chess notation is first recorded. |
1183
Jul 11
Age: 66y
| 1183 • The Peace of Constance is signed between Frederick Barbarossa and the Lombard League. |