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| YEAR | DATE | EVENT | PRINCE | PRIME MINISTER |
| 455 | Duchy | Cunedda | ||
| 470 | Einion | |||
| 500 | Cadwallon I | |||
| 534 | Maelgwyn I | |||
| 549 | Rhun | |||
| 580 | Beli | |||
| 599 | Iago | |||
| 615 | Cadfan | |||
| 625 | Cadwallon II | |||
| 634 | Cadfael | |||
| 655 | Cadwalladr | |||
| 682 | Idwal I | |||
| 720 | Rhodri I | |||
| 754 | Caradoc | |||
| 798 | Conan | |||
| 814 | Howel I | |||
| 825 | Mervyn | |||
| 844 | Principality | Rhodri II | ||
| 878 | Anarawd ap Rhodri | |||
| 916 | Idwal | |||
| 942 | Hywel Dda | |||
| 950 | Iago ab Idwal | |||
| 979 | Hywel ab Ieuaf | |||
| 985 | Cadwallon ab Ieuaf | |||
| 986 | Maredudd ab Owain ap Hywel Dda | |||
| 999 | Cynan ap Hywel ab Ieuaf | |||
| 1005 | Llywelyn ap Seisyll | |||
| 1023 | Iago ab Idwal ap Meurig | |||
| 1039 | Gruffydd ap Llywelyn ap Seisyll | |||
| 1063 | Bleddyn ap Cynfyn | |||
| 1075 | Trahaern ap Caradog | |||
| 1081 | Gruffydd ap Cynan ab Iago | |||
| 1137 | Owain Gwynedd | |||
| 1170 | Dafydd ab Owain Gwynedd | |||
| 1194 | Llywelyn Fawr | |||
| 1240 | Dafydd ap Llywelyn | |||
| 1246 | Llywelyn ap Gruffydd ap Llywelyn | |||
| 1282 | Dafydd ap Gruffydd | |||
| 1283 | Principality of Kingdom of England | |||
| 1543 | Union to England | |||
| 1999 | 16 may | State of UK | Alun Michael | |
| 2000 | 9 february | Rhodri Morgan | ||
| 20xx | Carwyn Jones | |||
| 2018 | 12 december | Mark Drakeford | ||
| 2024 | 17 march | Vaughan Gething |