11th century in Wales

This article is about the particular significance of the century 1001â1100 to Wales and its people.

Quick facts

10th century \| 12th century \| Other years in Wales
Other events of the century

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Events

1005

Aeddan ap Blegywryd succeeds Cynan ab Hywel as Prince of Gwynedd.^[1]

1018

Llywelyn ap Seisyll defeats Aeddan ap Blegywryd in battle; Aeddan and his four sons are killed.^[1] Through marriage to Angharad ferch Maredudd ab Owain.^[2]

1022

Llywelyn ap Seisyll defeats the Irish pretender Rhain at Abergwili.^[3]

1045

Gruffydd ap Rhydderch expels Gruffydd ap Llywelyn from Deheubarth.

1055

24 October - Gruffydd ap Llywelyn defeats Ralph the Timid and sacks Hereford.^[4] He is now ruler of all Wales.

1056

10 February - Gruffydd ap Llywelyn defeats an English army at Glasbury.^[5]

1062

Harold Godwinson makes a surprise attack on Gruffydd ap Llywelyn at Rhuddlan; Gruffydd escapes.

1063

Tostig leads an army into north Wales.

1067

Chepstow Castle is founded by William FitzOsbern, 1st Earl of Hereford.

1070

Battle of Mechain between the sons of Gruffydd ap Llywelyn and the sons of Cynfyn ap Gwerstan of Powys.
Bleddyn ap Cynfyn enacts new laws regulating the activities of bards and musicians.

1081

Battle of Mynydd Carn: Gruffudd ap Cynan and Rhys ap Tewdwr defeat Trahaearn ap Caradog, Caradog ap Gruffydd and Meilir ap Rhiwallon. However, Gruffudd ap Cynan is subsequently captured and imprisoned by Hugh d'Avranches, 1st Earl of Chester, and his kingdom is granted to Robert of Rhuddlan, Hugh's cousin.

1088

Bernard de NeufmarchÃ© begins creation of the Lordship of Brecknock by conquest.

1092

Hervey le Breton is appointed Bishop of Bangor by William II of England.

1093

3 July - Robert of Rhuddlan is killed by a Welsh raiding party on the shores of the Great Orme and rule of his lands is taken over directly by his cousin Hugh of Chester.

1094

Welsh revolt against Anglo-Norman rule. Cadwgan ap Bleddyn of Powys defeats a Norman force at the battle of Coed Yspwys.

1095

Battle of Aber Llech secures Bernard de NeufmarchÃ©'s Lordship of Brecknock, leading to the encastellation of Brycheiniog.
William II of England attempts to suppress the revolt in north Wales with little success.

1096

Battle of Celli Carnant in Pembrokeshire.

1097

William II of England again attempts to suppress the revolt (at this time led by Cadwgan ap Bleddyn) with little success.

1098

Hugh d'Avranches, Earl of Chester, and Hugh of Montgomery, Earl of Shrewsbury, attempt to recover lost Anglo-Norman territory in Gwynedd. In the Battle of Anglesey Sound (June or July) in which Magnus Barefoot, King of Norway, intervenes and Hugh of Shrewsbury is killed, the Normans are forced to give up Anglesey.

1099

Gruffudd ap Cynan (having previously escaped from imprisonment) regains the throne of Gwynedd; and Cadwgan ap Bleddyn is able to reclaim part of Powys and Ceredigion on condition of doing homage to the new Earl of Shrewsbury, Robert of BellÃªme.

Births

1054

probable - Robert II, Duke of Normandy (a prisoner in Cardiff Castle during the 12th century)

Deaths

1005

date unknown - Cynan ap Hywel, Prince of Gwynedd

1010

probable - Elystan Glodrydd, founder of the fifth Royal Tribe of Wales

1018

date unknown - Aeddan ap Blegywryd, Prince of Gwynedd

1023

date unknown - Llywelyn ap Seisyll, King of Gwynedd and Deheubarth

1025

date unknown - Cynan ap Seisyll, brother of Llywelyn ap Seisyll^[6]

1033

date unknown - Rhydderch ap Iestyn, ruler of Gwent, Morgannwg, Deheubarth and Powys

1044

date unknown - Hywel ab Edwin, Prince of Deheubarth

1039

date unknown - Iago ab Idwal ap Meurig, Prince of Gwynedd