Ceredigion, Seisyllwg and Dyfed

Ceredigion
Ceredig ap Cunedda 424–453
Usai 453–490
Serwyl 490–525
Boddw 525–560
Arthfoddw 560–595
Arthlwys 595–630
Clydog I 630–665

Dyfed
Anwn c.357
Ednyfed c.373
Clotri c.405
Triffyn Farfog c.385
Aergol Lawhir to c.515
Vortiporius c.540
Arthur son of Pedr c.585
Cloten c.630 married Ceindrech of Brycheiniog, uniting the two kingdoms
Rhain ap Cadwgan c.690-740 also king of Brycheiniog; on his death, his kingdoms were divided again by his sons
Tewdwr ap Rhain c.710
Maredudd ap Tewdwr c.740–797
Rhain ap Maredudd c.797–808
Owain ap Maredudd c.808–811
Triffyn ap Rhain to c.814
Hyfaidd born c.830,[4] ruled ?-893
Llywarch ap Hyfaidd c.893-904
Rhodri ap Hyfaidd c.904-905
Hywel Dda “Hywel the Good” c.905-909

Seisyllwg
Seisyll, Prince of Ceredigion; eponym and possibly founder of Seisyllg
Arthen to 807
Dyfnwallon
Meurig of Seisyllwg
Gwgon of Seisyllwg to 872

House Manaw
Angharad and Rhodri the Great stewards; 872–878
Cadell ap Rhodri, second son of Anghared and Rhodri 878–909
Hywel Dda “Hywel the Good” 909-920, when he merged Seisyll and Dyfed into Deheubarth

Deheubarth
Hywel Dda Hywel the Good 920–950
His son, Owain ap Hywel 950–986
Rhodri ap Hywel 950–953
Edwin ap Hywel 950–954
Owain ap Hywel's son, Maredudd ab Owain 986–999
Cynan ap Hywel, prince of Gwynedd 999–1005
Maredudd ab Owain's son, Edwin ab Einion 1005–1018 who co-ruled with his brother,
Cadell ab Einion 1005–1018
Llywellyn ap Seisyll, prince of Gwynedd 1018–1023
Rhydderch ap Iestyn, prince of Glywysing 1023–1033
Edwin ab Einion's son, Hywel ab Edwin 1033–1044
Rhydderch ap Iestyn's son, Gruffydd ap Rhydderch 1047–1055
Gruffydd ap Llywelyn, prince of Gwynedd 1055–1063
Edwin ab Einion's grandson, Maredudd ab Owain ab Edwin 1063–1072
his brother, Rhys ab Owain 1072–1078
his second cousin, Rhys ap Tewdwr 1078–1093

Deheubarth was in the possession of the Normans from 1093 to 1155

Gruffydd ap Rhys 1116–1137 ruled a portion of Deheubarth with Norman permission
his son, Anarawd ap Gruffydd 1136–1143
his brother, Cadell ap Gruffydd 1143–1151
his brother, Maredudd ap Gruffydd 1151–1155
his brother, The Lord Rhys Rhys ap Gruffydd 1155–1197
his son, Gruffydd ap Rhys 1197–1201 who for a time ruled jointly with his brother,
Maelgwn ap Rhys 1199–1230 who disputed the territory with his brother
Rhys the Hoarse Rhys Gryg 1216–1234

From 1234 to 1283, Deheubarth was subject to the princes of Gwynedd

Rhys the Hoarse's son, Rhys Mechyll 1234–1244 ruled a portion of Deheubarth
his brother, Maredudd ap Rhys 1244–1271 ruled a portion of Deheubarth
his son, Rhys ap Maredudd 1271–1283 ruled a portion of Deheubarth

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