| YEAR | DATE | EVENT | HEAD OF STATE |
| 787 | Bishopland | Bishop Hildebrand | |
| 795 | Arcibishopland | Arcibishop Hildebrand | |
| 819 | Arcibishop Hadbold | ||
| 842 | Arcibishop Hildwin | ||
| 850 | Arcibishop Günther | ||
| 864 | arcibishop Ugo Welf | ||
| 870 | Arcibishop Wilbert | ||
| 890 | arcibishop Hermann I dinasty Ezzoni | ||
| 925 | arcibishop Wigfried of Lorena | ||
| 953 | arcibishop Bruno I of Saxe | ||
| 965 | arcibishop Volkmar | ||
| 969 | arcibishop Gero | ||
| 976 | arcibishop Warin | ||
| 984 | arcibishop Ebergar | ||
| 999 | arcibishop Heribert | ||
| 1021 | arcibishop Pilgrim dinasty Ezzoni | ||
| 1035 | arcibishop Hermann II dinasty Ezzoni | ||
| 1056 | arcibishop Anno | ||
| 1076 | arcibishop Hildholf | ||
| 1079 | arcibishop Sigwin | ||
| 1089 | arcibishop Hermann III Hochstaden | ||
| 1100 | arcibishop Friedrich I Andechs | ||
| 1131 | arcibishop Bruno II von Berg | ||
| 1137 | arcibishop Hugo von Sponheim | ||
| 1138 | arcibishop Arnold I | ||
| 1151 | arcibishop Arnold II von Wied | ||
| 1156 | arcibishop Friedrich II von Berg | ||
| 1158 | arcibishop Rainald von Dasseld | ||
| 1167 | arcibishop Philipp von Heinsberg | ||
| 1191 | arcibishop Bruno III von Berg | ||
| 1193 | arcibishop Adolf I von Berg | ||
| 1216 | arcibishop Engelbert I von Berg | ||
| 1225 | arcibishop Heinrich I von Mulnarken | ||
| 1238 | arcibishop Konrad von Hochstaden | ||
| 1261 | arcibishop Engelbert II von Falkenstein | ||
| 1272 | 4° Principality Elettorale | p.e. and arcibishop Engelbert II von Falkenstein | |
| 1274 | p.e. and arcibishop Sigfried II von Westerburg | ||
| 1297 | p.e. and arcibishop Wikbold I von Holte | ||
| 1304 | p.e. and arcibishop Heinrich II von Virneburg | ||
| 1332 | p.e. and arcibishop Walram von Julich | ||
| 1349 | p.e. and arcibishop Wilhelm von Gennep | ||
| 1363 | p.e. and arcibishop Adolf II von Der Marck | ||
| 1364 | p.e. and arcibishop Engelbert III von Der Marck | ||
| 1370 | p.e. and arcibishop Kuno von Falkenstein | ||
| 1371 | p.e. and arcibishop Friedrich III von Saarwerden | ||
| 1414 | p.e. and arcibishop Dietrich II von Mors | ||
| 1463 | p.e. and arcibishop Rupprecht p.e. of Pfalz | ||
| 1480 | p.e. and arcibishop Hermann IV of Hesse | ||
| 1508 | p.e. and arcibishop Philipp II von Daun-Oberstein | ||
| 1515 | p.e. and arcibishop Hermann V von Wied | ||
| 1547 | p.e. and arcibishop Adolf III von Schauenburg | ||
| 1556 | p.e. and arcibishop Anton von Schauenburg | ||
| 1558 | p.e. and arcibishop (Johann) Gebhard I von Mansfeld-Vorderort | ||
| 1562 | p.e. and arcibishop Friedrich IV von Wied | ||
| 1567 | p.e. and arcibishop Salentin von Isenburg-Grenzau | ||
| 1577 | p.e. and arcibishop Gebhard II von Waldburg | ||
| 1583 | p.e. and arcibishop Ernst von Bayern | ||
| 1612 | p.e. and arcibishop Ferdinand von Bayern | ||
| 1650 | p.e. and arcibishop Maximilian Heinrich von Bayern | ||
| 1688 | p.e. and arcibishop Joseph Clemens von Bayern | ||
| 1723 | p.e. and arcibishop Clemens August von Bayern | ||
| 1761 | p.e. and arcibishop Maximilian Friedrich von Konigsegg-Rothenfels | ||
| 1784 | p.e. and arcibishop Maximilian Franz von Osterreich | ||
| 1801 | p.e. and arcibishop Anton Viktor von Osterreich | ||
| 1803 | Union to Greatduchy of Frankfurt | ||
| 1918 | 9 november | Union to German State of Westfalia |