Tewdwr, Kings of Brycheiniog
(Born c.AD 705)
(Latin: Theodorus; English: Theodore)

Tewdwr was the second son of King Rhain of Dyfed & Brycheioniog. In the mid-8th century, he inherited the Kingdom of Brycheioniog, while his brother, Tewdws, took on Dyfed. However, Tewdwr had a rival in the person of Elwystl ap Awst, probably his cousin, who also claimed to be rightful King of Brycheiniog. The two were persuaded to live peacefully side-by-side and to this end they swore an oath on the altar of St. Dyfrig (probably at Gwenddwr). Tewdwr soon broke the peace though and brutally murdered Elwystl. He was forced to give up Llanfihangel Cwm Du to the Church for his misdemeanour but his reign continued. He was the great great grandfather of King Elisedd ap Tewdwr of Brycheiniog.