703 - Death of King Daniel Dremrudd of Brittany.

c.705 - King Gerren of Dumnonia grants land at Maker to Sherborne Abbey in an attempt to strengthen his position in the disputed regions of Dorset.

710 - King Gerren of Dumnonia clashes with King Ine of Wessex who manages to establish a fortress at Taunton.

c.710 - King Seisyll of Ceredigion invades Dyfed and conquers Ystrad Towi to create the greater kingdom of Seisyllwg. A reduced Dyfed and Brycheiniog both appear to have taken on the name of Rhainwg: King Rhain's kingdom now sliced in two.

712 - Death of King Idwal Iwrch of Gwynedd

717 - Death of St.Winnoc, Abbot of Wormhout.

c.720 - Contact between the Welsh Church and Yvi of Brittany is the last known link between the two Celtic countries. After this, each nation goes its own separate way. Death of King Rhain of Rhainwg. His kingdom, already physically divided, is now politically split between his sons, Tewdos (who takes Dyfed) and Tewdr (who takes Brycheiniog). Prince Sandde moves the exiled Royal House of South Rheged from Powys to Ynys Manaw when he married the island kingdom's heiress, Princess Celemion.

722 - King Ine of Wessex attempts a takeover of Dumnonia. His armies are crushed and have to withdraw. Death of King Bili of Strathclyde. King Teudebur succeeds to the throne.

c.730 - Civil War between King Tewdr of Brycheiniog and a rival claimant to his throne, his cousin, Awst. The latter is slain. Tewdr is persuaded to live in peace with Awst's son, Elwystl.

c.731 - King Elisedd of Powys expels the Mercians from his kingdom.

c.740 - Death of King Iudgual of Ynys Manaw. He is succeeded by his nephew, Prince Elidyr, the heir of the dispossessed House of South Rheged.

743 - Kings Aethelbald of Mercia and Ceolred of Wessex join forces to attack Gwent and Powys.

c.744 - Construction of Wat's Dyke. The border between Mercia and Powys is set here.

750 - The Strathclyde Britons under King Teudebur defeat Prince Talorgen of the Picts at the Battle of Mugdock. Decline of the power of King Angus I of the Picts.

c.750 - King Tewdr of Brycheiniog breaks the peace with his cousin, Elwystl, and murders him.

752 - Death of King Teudebur of Strathclyde. His son, Dumnagual, succeeds to the throne and promptly loses Kyle to King Eadberht of Northumbria.

754 - Death of King Rhodri Molwynog of Gwynedd. His son, King Cynan Dindaethwy, nominally succeeds to the throne, but he is very young and Caradog ap Meirion (of the House of Rhos) soon usurps the throne of Gwynedd

756 - Kings Angus I of the the Picts and Eadberht of Northumbria attack King Dumnagual of Strathclyde at Dumbarton. However, Eadberht's entire force is subsequently wiped out, probably by the Britons, at the Battle of Newburgh-on-Tyne.

760 - The Battle of Hereford is fought probably between the Mercians and the Kingdom of Brycheiniog under King Nowy Hen. Death of King Dumnagual of Strathclyde.

768 - Archbishop Elfoddw of Gwynedd persuades the Welsh Church to accept the Roman dating of Easter as agreed by the Northern British Church at the Synod of Whitby.

784 - Construction of Offa's Dyke, the artificial bank and ditch boundary between England and Wales, is begun at the command of King Offa of Mercia.

797 - Welsh forces, including those of Powys and Dyfed, clash with the Mercians at the Battle of Rhuddlan, when King Coenwulf tries to re-assert his domination of North-East Wales. King Maredydd of Dyfed is killed in the fighting. The Mercians push on westward.

798 - King Caradog of Gwynedd is killed fighting the Mercians of King Coenwulf in Snowdonia. King Cynan Dindaethwy retakes the throne, much to the disappointment of Caradog's son, Hywel Farf-Fehinog.