11th century in Wales

This article is about the particular significance of the century 1000 - 1099 to Wales and its people.

Events

1005
*Aeddan ap Blegywryd succeeds Cynan ab Hywel as Prince of Gwynedd.1018
*Llywelyn ap Seisyll defeats Aeddan ap Blegywryd in battle; Aeddan and his four sons are killed.1022
*Llywelyn ap Seisyll defeats the pretender Rhain at Abergwili.1045
*Gruffydd ap Rhydderch expels Gruffydd ap Llywelyn from Deheubarth.1055
*October 24 - Gruffydd ap Llywelyn defeats Ralph the Timid and sacks Hereford. He is now ruler of all Wales.1056
*Gruffydd ap Llywelyn defeats an English army at Glasbury.1062
*Harold Godwinson makes a surprise attack on Gruffydd ap Llywelyn at Rhuddlan; Gruffydd escapes.1063
*Tostig leads an army into north Wales.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: Gruffydd ap Cynan and Rhys ap Tewdwr defeat Trahaearn ap Caradog, Caradog ap Gruffydd and Meilir ap Rhiwallon.1099
*Gruffydd ap Cynan regains the throne of Gwynedd.

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 Gwynedd1018
*"date unknown" - Aeddan ap Blegywryd, Prince of Gwynedd1023
*"date unknown" - Llywelyn ap Seisyll, King of Gwynedd and Deheubarth1033
*"date unknown" - Rhydderch ap Iestyn, ruler of Gwent, Morgannwg, Deheubarth and Powys1044
*"date unknown" - Hywel ab Edwin, Prince of Deheubarth1039
*"date unknown" - Iago ab Idwal ap Meurig, Prince of Gwynedd1055
*"date unknown" - Gruffydd ap Rhydderch (in battle)1063
*August 5 - Gruffydd ap Llywelyn, ruler of Wales (assassinated)1075
*"date unknown" - Bleddyn ap Cynfyn, Prince of Gwynedd and Powys1081
*At the Battle of Mynydd Carn (date unknown)
**Trahaearn ap Caradog, Prince of Gwynedd
**Caradog ap Gruffydd