- 13 weird and wonderful things you never knew about Carmarthenshire
- The mysterious Physicians of Myddfai served at the court of the Welsh prince, Rhys Gryg, who was killed attacking the Norman castle in Carmarthen in 1234.
- Lynn Hughes: Curiously enough... OGS, Hywel Dda and the Physicians of Myddfai
- We learn from the Chronicle of the Princes (Brut y Tywysogion) that Rhiwallon, a physician of Myddfai, tended the wounded Prince, Rhys Gryg, at Dynevor near Llandilo-fawr. He had been struck by an enemy arrow while laying siege to Carmarthen castle in ...
Rhys Gryg is described in multiple online sources, as addition to our editors' articles, see section below for printable documents, Rhys Gryg books and related discussion.