| YEAR | DATE | EVENT | HEAD OF STATE |
| 787 | Arcibishopland | Arcibishop Willehad | |
| 789 | Arcibishop Willerich | ||
| 837 | Arcibishop Landerich | ||
| 845 | vacant | ||
| 849 | Arcibishop Ansgar | ||
| 865 | Arcibishop Rembert | ||
| 888 | Arcibishop Adalgar | ||
| 909 | Arcibishop Hoger | ||
| 916 | Arcibishop Reginwart | ||
| 916 | Arcibishop Ungi | ||
| 936 | Arcibishop Adaldag | ||
| 988 | Arcibishop Libentius I | ||
| 1013 | Arcibishop Unwan | ||
| 1029 | Arcibishop Libentius II | ||
| 1032 | Arcibishop Hermann | ||
| 1035 | Arcibishop Bezelin | ||
| 1045 | arcibishop Adalbert I of Saxony | ||
| 1072 | arcibishop Liemar | ||
| 1101 | arcibishop Humbert | ||
| 1104 | arcibishop Friedrich I | ||
| 1123 | arcibishop Adalbert II | ||
| 1148 | arcibishop Hartwig I of Stade | ||
| 1168 | arcibishop Baldwin of Holland | ||
| 1178 | arcibishop Berthold | ||
| 1179 | arcibishop Sigfried of Anhalt | ||
| 1184 | arcibishop Hartwig II von Utlede | ||
| 1207 | arcibishop Burchard I of Stumpenhausen | ||
| 1210 | arcibishop Gerhard I of Wildeshausen | ||
| 1219 | arcibishop Gerhard II of Lippe | ||
| 1258 | arcibishop Hildebold of Hunstorf | ||
| 1273 | arcibishop Giselbert von Bronchorst | ||
| 1306 | arcibishop Heinrich I von Goltern | ||
| 1307 | arcibishop Florent von Bronchorst | ||
| 1307 | arcibishop Bernhard of Wolpe | ||
| 1308 | arcibishop Johann I Grand | ||
| 1327 | arcibishop Burchard II Grelle | ||
| 1344 | arcibishop Otto I of Oldenburg | ||
| 1348 | arcibishop Gottfried of Arnsberg | ||
| 1359 | arcibishop Albrecht of Braunschweig-Luneburg | ||
| 1395 | arcibishop Otto II of Oldenburg | ||
| 1406 | arcibishop Johann II Schlamstorf | ||
| 1422 | arcibishop Nicholas Count of Delmenhorst | ||
| 1435 | arcibishop Baldwin von Wenden | ||
| 1441 | arcibishop Gerhard III of Hoya | ||
| 1463 | arcibishop Heinrich II of Schwarzburg | ||
| 1496 | arcibishop Johann III Rode | ||
| 1511 | arcibishop Christoph of Braunschweig-Luneburg | ||
| 1558 | arcibishop Georg of Braunschweig-Luneburg | ||
| 1567 | arcibishop Heinrich III of Saxe-Lauenburg | ||
| 1585 | arcibishop Johann Adolf of Holstein-Gottorp | ||
| 1596 | arcibishop Johann Friedrich of Holstein-Gottorp | ||
| 1634 | arcibishop Friedrich II King of Denmark | ||
| 1648 | Duchy of King of Sweden | ||
| 1711 | Union to Duchy of Lauenburg |