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Deheubarth

kingdom in west Britain

22 dated entries naming Deheubarth, drawn from 21 separate years between 880 CE and 1287 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.

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9th century

  • 880Hywel ap Cadell, king of Deheubarth (Wales) (approximate date)source

10th century

  • 918Kings Idwal Foel of Gwynedd and Hywel ap Cadell, and Prince Clydog of Deheubarth (Wales) submit to the overlordship of Edward the Elder. The Vikings raid Anglesey.source
  • 920The Welsh ruler Hywel Dda ("the Good") merges Dyfed and Seisyllwg, establishing a new kingdom known as Deheubarth.source
  • 927July 12 – King Æthelstan of Wessex receives the submission of High-Reeve Ealdred I of Bamburgh and probably also of Owain ap Dyfnwal, King of Strathclyde, at Eamont Bridge. He also secures a pledge from King Constantine II of Scotland, that he will not ally with the Viking kings. This summer also Kings Hywel Dda of Deheubarth and Owain of Glywysing and Gwent submit to the overlordship of Æthelstan at Hereford. The borders between England and Wales are set at the River Wye.source
  • 928King Hywel Dda (the Good) of Deheubarth makes a pilgrimage to Rome, he becomes the first Welsh ruler to undertake such a trip. Hywel begins the codification of medieval Welsh law and mints his own coinage.source
  • 931King Morgan Hen of Glywysing and Gwent (Wales) submits to the overlordship of King Æthelstan, and attends his court with Kings Hywel Dda of Deheubarth and Idwal Foel of Gwynedd.source
  • 934King Tewdwr of Brycheiniog attends the court of King Æthelstan and signs the English Land Charters. Kings Hywel Dda of Deheubarth, Idwal Foel of Gwynedd and Morgan Mwynfawr ("the Old") of Morgannwg are compelled to accompany Æthelstan on his campaign against King Constantine II of Scotland.source
  • 942Hywel Dda, king of Deheubarth, annexes Gwynedd and Powys, to become the sole ruler of most of Wales.source
  • 953Rhodri ap Hywel, king of Deheubarth (Wales)source
  • 997Rhys ap Tewdwr, king of Deheubarth (d. 1093)source

11th century

  • 1033Rhydderch ap Iestyn, king of Gwent and Deheubarthsource
  • 1055Gruffydd ap Rhydderch, king of Deheubarthsource
  • 1081Battle of Mynydd Carn (near St Davids in Wales): Gruffudd ap Cynan in alliance with Rhys ap Tewdwr, prince of Deheubarth, defeats the forces of Trahaearn ap Caradog, Caradog ap Gruffydd and Meilir ap Rhiwallon (who are all killed), allowing Gruffudd to claim the Kingdom of Gwynedd.source
  • 1081Gruffydd ap Rhys, Welsh king of Deheubarth (d. 1137)source
  • 1093April – Rhys ap Tewdwr, Welsh king of Deheubarth, killed in battle (b. 997)source

12th century

  • 1116The Welsh under King Gruffydd ap Rhys of Deheubarth attack Llandovery Castle, but are defeated. Gruffydd also attacks Swansea Castle and destroys the outer walls.source
  • 1132Rhys ap Gruffydd, Welsh prince of Deheubarth (d. 1197)source
  • 1136Gwenllian ferch Gruffydd, Welsh princess of Deheubarthsource
  • 1165c. August – Battle of Crogen: Owain Gwynedd (Owain Fawr), ruler of the Kingdom of Gwynedd in north Wales, having formed an alliance with his nephew Rhys ap Gruffydd, prince of Deheubarth, to challenge English rule, defeats King Henry II of England and drives his army out of Wales.source
  • 1197April 28 – Rhys ap Gruffydd, Welsh prince of Deheubarthsource

13th century

  • 1201July 25 – Gruffydd ap Rhys II, Welsh prince of Deheubarthsource
  • 1287June 8 – Welsh forces led by Rhys ap Maredudd revolt in Wales against King Edward I (Longshanks). Although Maredudd has assisted the English in the past, he accuses Edward of treating him unfairly over taxes. The rebels burn several towns, including Swansea and Carmarthen. They capture most of Ystrad Tywi, heartland of Deheubarth (the revolt will not be suppressed until 1288).source

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