Johann I. von SachsenAge: 36 years1249–1285
- Name
- Johann I. von Sachsen
| Birth | 1249 |
| Birth of a son #1 | Albert III. von Sachsen-Lauenburg 1281 (Age 32 years) |
| Occupation | duke between 1260 and 1282 (Age 11 years) |
| Death | July 30, 1285 (Age 36 years) |
| Johann I. von Sachsen + … … |
| himself |
Johann I. von Sachsen Birth: 1249 Death: July 30, 1285 |
| son |
Albert III. von Sachsen-Lauenburg Birth: 1281 32 Death: 1309 |