Teyrnas Powys
Ríocht mheánaoiseach ab ea Teyrnas Powys, a bunaíodhle linn an Ré Dhorcha, i ndiaidh imeacht na Rómhánach sa chúigiú haois. Mhair sé go ceann na gcéadta bliain, ach scoilteadh in dhá leath í sa bhliain 1160, agus tháinig Powys Wenwynwyn agus Powys Fadog i gcomharbacht air.

Rialtóirí Powys

Ríthe Powys

Rítheaghlach Gwerthrynion 
 Gwrtheyrn (Vortigern, Ard-Rí)
 Cadeyern Fendigaid c.430–447
 Cadell Ddyrnllwg c. 447–460
 Rhyddfedd Frych c. 480
 Cyngen Glodrydd c. 500
 Pasgen ap Cyngen c. 530
 Morgan ap Pasgen c. 540
 Brochwel Ysgithrog c. 550
 Cynan Garwyn (?–610)
 Selyf ap Cynan (610–613)
 Manwgan ap Selyf (613)
 Eiludd Powys (613–?)
 Beli ap Eiludd (c. 655)
 Gwylog ap Beli (695 –725)
 Elisedd ap Gwylog (725–755?)
 Brochfael ap Elisedd (755?–773)
 Cadell ap Elisedd (773–808)
 Cyngen ap Cadell (808–854)

Rítheaghlach Manaw 
 Rhodri Mawr (854–878) as Gwynedd, a tháinig i gcomharbacht as oidhreacht a mháthar. 
 Merfyn ap Rhodri (878–900)
 Hywel Dda (942–950) 
 Owain ap Hywel (950–986) 
 Maredudd ap Owain (986–999)
 Llywelyn ap Seisyll (999–1023)
 Rhydderch ap Iestyn (1023–1033)
 Iago ap Idwal (1033–1039)
 Gruffydd ap Llywelyn (1039–1063)

Prionsaí Powys (as Mathrafal) 
 Bleddyn ap Cynfyn (1063–1075)
 Iorwerth ap Bleddyn (1075–1103)
 Cadwgan ap Bleddyn (1075–1111)
 Owain ap Cadwgan (1111–1116)
 Maredudd ap Bleddyn (1116–1132)
 Madog ap Maredudd (1132–1160)

Ón mbliain 1160 ar aghaidh, scoilteadh Powys in dhá leath. Thugtaí ‘Powys Wenwynwyn’ ar an bpáirt dheisceartach, agus ‘Powys Fadog’ ar an bpáirt thuaisceartach.

Tagairtí 

 Davies, John (1990), History of Wales, Penguin Books.
 Hen, Llywarch (c.9ú haois), Canu Heledd.
 Morris, John (1973), The Age of Arthur, Weidenfeld & Nicolson.
 Remfry, P.M., (2003), A Political Chronology of Wales 1066 to 1282 (ISBN 1-899376-46-1)

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