Celtic Kingdoms of the British Isles

Builth (Buellt)

The kingdom was centred on Caer Bedris in Builth, in modern Powys. It was apparently founded as an offshoot of Powys by the Powysian Vortigern's son. Apparently his claim was confirmed by Ambrosius Aurelianus at Caer Gloui after Vortigern's death.

The sub-kingdom or region of Gwerthrynion was part of Builth's territory, and the kings often seem to bear the title king of Guorthegirnaim (Gwerthrynion).

c.406 - c.440

Pascent / Pasgen ap Gwrtheyrn

Third son of Vortigern. Given Builth & Gwerthrynion by his father.

Geoffrey of Monmouth proposes an almost entirely mythical account of the life of Ambrosius Aurelianus and of Pascent, who remain enemies throughout their lifetimes. Utherpendragon sets out to attack the Saxons involved in his brother's death, who have teamed up with 'Paschent' and a young nobleman of Ireland named Gillomanius. Uther defeats them all, killing Paschent and Gillomanius.

c.440 - c.475

Braciat / Braigad ap Pasgen

Son.

fl c.442

Morgan ap Pasgen

Brother. Joint ruler?

c.475 - c.510

Idnerth ap Briagad

Son of Braciat.

c.510 - c.545

Meuprit / Meurig ap Idnerth

Son.

c.545 - c.580

Pau / Pawl ap Meurig

Son. Sub-king to Brycheiniog for a time.

c.580 - c.615

Eltat / Elaed ap Eldoc ap Pawl

Son.

c.615 - c.650

Moriud / Morwd ap Elaed

Son.

c.650 - c.685

Guoidcant / Gwyddgan ap Morwd

Son.

c.685 - c.715

Pascent / Pasgen Buellt

Son.

c.715 - c.745

Teudor / Tedwr ap Pasgen

Son.

fl c.720

Glowd ap Pasgen

Brother. Joint ruler?

fl c.785

Braustud ferch Glowd

Dau. m Arthfael Hen (the Old) of Glywyssing.

c.745 - ?

Fernvail / Ffernfael ap Tewdr

Uncle. Last king of Builth & Gwerthrynion

by 800

The kingdom ceases to exist, being absorbed by Seisyllwg and then Deheubarth.