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Rulers of Gwynedd c.450-1378
Rulers of Powys c.430-1063
Rulers of Deheubarth 424-1283
Rulers of Gwent 480-1116

in Caer-Went
Ynyr ap Dyfnwal ap Ednyfed ap Anwn and his wife-St Madrun ferch Gwerthefyr
Iddon ap Ynyr 480-490
Caradog “Strongarm” ap Ynyr
Meurig ap Caradog and his wife-Dyfwn ferch Glywys
Erbic ap Meurig ?

in Caer-Leon
Anwn ap Macsen Wledig
Tudwal ap Anwn
Teithrin ap Tudwal
Teithfallt ap Teithrin
Tewdrig, son of Teithfallt 490-493/517
Meurig ap Tewdrig King of Gwent 493/517-530–540
Athrwys ap Meurig King of Gwent 530–540-573
Frioc ap Meurig, with Idnerth ap Meurig ?
Ithel ap Athrwys
Morgan the Great ?
Morgan the Courteous and Benefactor ? -654
Anthres ap Morcant ? 654-663
Morgan the Generous - 730
Ithel ap Morgan 710/715-735/740/745/755
Ffernfael ab Idwal - 774/777
Athrwys ap Ffernfael 774-810
Idwallon ap Gwrgant 810-842
Ithel ap Hywel or ap Athrwys?842-848
Meurig ap Hywel or ap Ithel? 848-849
Meurig ap Arthfael Hen 849-874
Ffernfael ap Meurig 874-880
Brochfael ap Meurig 880-920
Arthfael ap Hywel -916/927
Owain ap Hywel 920-930
Cadell ap Arthfael 930-940/943
Morgan the Old Morgan Hen or Morgan ab Owain or Morgan Hen Fawr 940/943–955 united the former kingdoms of Gwent and Glywysing in 942 under the name of Morgannwg, but they were broken up again immediately after his death, remaining separate until about 1055
Nowy ap Gwriad ap Brochfael ap Rhodri ap Arthfael Hen ruled Gwent c. 950–c. 970 while Glywysing was ruled jointly by brothers of Owain ap Morgan dates unknown, probably under Morgan the Old
his son, Arthfael ap Nowy about 970–983
his cousin, Rhodri ap Elisedd 983–c.1015 who ruled jointly with his brother,
Gruffydd ap Elisedd 983–c.1015
his ?cousin, Edwyn ap Gwriad 1015–1045
Hywel ab Owain's son, Meurig ap Hywel 1045–1055 who ruled jointly with
his son, Cadwgan ap Meurig 1045–1055
the invader, Gruffydd ap Llywelyn, prince of Gwynedd 1055–1063 who died and was replaced with his predecessor
Cadwgan ap Meurig 1063–1074, who was also King of Morgannwg, ruling Glywysing through
Gruffydd ap Rhydderch's son, Caradog ap Gruffydd 1075–1081 who seized Gwent and the Kingdom of Morgannwg,
Iestyn ap Gwrgant 1081–1091
Iestyn was the last ruler of an independent Morgannwg, which was thereafter in the possession of the Normans and became the lordship of Glamorgan

Owain ap Caradog 1081-1113/1116

Glywysing
Eugenius, son of Magnus Maximus
Marius, son of Eugenius
Solar, son of Marius
Glywys, son of Solar c.470–c.480, who gave his name to the kingdom.
Gwynllyw, son of Glywys, ruler of Gwynllwg c.480–523, cantref of Glywysing
Pawl, son of Glywys, ruler of Penychen c.480–540, cantref of Glywysing
Mechwyn, son of Glywys, ruler of Gorfynydd c.480–c.500, cantref of Glywysing
Cadoc, son of Gwynllyw, ruler of Gwynllwg 523–580 and Penychen 540–580, died without heirs
Glywysing is ruled by the Kings of Gwent until Rhys ap Ithel
Rhys ap Ithel/Rhys ab Idwal, son of the Kings of Gwent c.755–785, with brothers, Rhodri and Meurig
Arthfael Hen ap Rhys, Hen the Old 785–c.825, with Brochfael ap Rhys
Rhys ap Arthfael, c.830–c.840
Hywel ap Rhys, c.840–886
Owain ap Hywel 886–c.930
Gruffydd ab Owain c.930–934 King of Gower
Cadwgan ab Owain c.930–950 King of West Glywysing
Morgan the Old Morgan Hen or Morgan ab Owain or Moragn Hen Fawr 930–974 united the former kingdoms of Gwent and Glywysing in 942 under the name of Morgannwg, but they were broken up again immediately after his death, remaining separate until about 1055
Morgan the Old's son, Owain ap Morgan 974–c.983
brothers of Owain ap Morgan Idwallon, Hywel and Cadell dates unknown
his son, Rhys ab Owain c.990–c.1000 who ruled Glywysing jointly with his brothers,
Ithel the Black, son Idwallon 990
Hywel ab Owain c.990–c.1043 and
Iestyn ab Owain c.990–c.1015
his son, Rhydderch ap Iestyn c.1015–1033
his son, Gruffydd ap Rhydderch 1033–1055
Gwrgant ab Ithel the Black 1033-1070
the invader, Gruffydd ap Llywelyn, prince of Gwynedd 1055–1063
Gruffydd ap Rhydderch's son, Caradog ap Gruffydd 1063–1081 who was a subject of the King of Gwent and King of Morgannwg Cadwgan ap Meurig before he deposed him and took the kingdom for himself
Iestyn ap Gwrgant 1081–1091

Iestyn was the last ruler of an independent Morgannwg, which was thereafter in the possession of the Normans and became the lordship of Glamorgan

NOTE: saved from online sources as a starting outline only.