| YEAR | DATE | EVENT | HEAD OF STATE | 
| 1195 |  | Duchy of Brunswick-Luneburg of duke of Brunswick |  | 
| 1267 |  | dinasty Brunswick-Este | duke John  I | 
| 1277 |  |  | duke Ottone II | 
| 1330 |  |  | duke Ottone III | 
| 1352 |  |  | duke Wilhelm II | 
| 1369 |  | Duchy of Duchy of Brunswick |  | 
| 1409 |  | dinasty Brunswick-Este | duke Enrico II | 
| 1416 |  |  | duke Wilhelml II duke of Brunswick | 
| 1419 |  |  | duke Bernardo I duke of Brunwsick | 
| 1434 |  |  | duke Ottone IV | 
| 1445 |  |  | duke Freidrich I (I) | 
| 1457 |  |  | duke Bernardo II | 
| 1464 |  |  | duke Ottone V | 
| 1471 |  |  | duke Freidrich I (II) | 
| 1478 |  |  | duke Enrico III | 
| 1532 |  |  | duke Ernst I | 
| 1546 |  |  | duke Francesco Ottone | 
| 1559 |  |  | duke Wilhelm IV | 
| 1592 |  |  | duke Ernst II | 
| 1611 |  |  | duke Cristiano | 
| 1633 |  |  | duke August | 
| 1636 |  |  | duke Freidrich II | 
| 1648 |  |  | duke Cristiano Ludwig | 
| 1665 |  |  | duke Georg Wilhelm duke of Lauenburg | 
| 1692 | 19 december | 9° Principality Electoral of Hannover | p.e. and duke Ernst August I | 
| 1698 | 2 february |  | p.e. and duke Georg I King of Great Britain |