This article is about the particular significance of the century 901–1000 to Wales and its people.
Events
905
The kingdom of Dyfed passes to Hywel Dda as a result of his marriage to Elen, the daughter of Llywarch ap Hyfaidd, following the death of Llywarch's heir, Rhydderch. 920 Hywel Dda unites the kingdoms of Dyfed and Seisyllwg to create Deheubarth. 928 King Æthelstan of England receives the submission of Welsh kings, including Hywel Dda, and sets the border of Wales at the River Wye. 969 Iago ab Idwal imprisons his brother Ieuaf ap Idwal. 985 Cadwallon ab Ieuaf becomes King of Gwynedd. 986 Maredudd ab Owain becomes King of Gwynedd, after disposing of its previous ruler, Cadwallon ab Ieuaf. 987 Maredudd ab Owain becomes King of Deheubarth. 992 Maredudd ab Owain attacks Morgannwg. 999 Cynan ap Hywel becomes King of Gwynedd. Vikings sack St David's and murder the bishop, Morgeneu.
Births
date unknown - Llywelyn ap Seisyll, King of Gwynedd and Deheubarth (d. 1023)
Deaths
900
Merfyn ap Rhodri, prince of Gwynedd
909
Cadell ap Rhodri, King of Seisyllwg
916
Anarawd ap Rhodri, King of Gwynedd
942
Idwal Foel, King of Gwynedd
950
Hywel Dda, King of most of Wales
953
Haearnddur, son of Merfyn ap Rhodri (probable) 979 Iago ab Idwal, King of Gwynedd 985 Hywel ab Ieuaf, King of Gwynedd 986 Cadwallon ab Ieuaf, King of Gwynedd 987 Owain ap Hywel, King of Deheubarth 999 Maredudd ab Owain, King of Gwynedd and Deheubarth Morgeneu, Bishop of St David's (in Viking raid)