The sons of Hywel were not able to keep hold of Gwynedd, which was reclaimed for the traditional dynasty of Aberffraw by Iago ap Idwal and Ieuaf ap Idwal, the sons of Idwal Foel.
St Mary's Church, Tal-y-llyn is a medieval church near Aberffraw in Anglesey, north Wales.
Aberffraw | House of Aberffraw | Adult ''Trivia monacha'' shells hand-picked from beachdrift, from near Aberffraw |
The introduction states that Edeyrn "performed it by command and at the desire of these three lords paramount, namely, Llewelyn, son of Gruffydd, prince of Aberffraw, and king of all Wales; Rhys Fychan, lord of Dinefwr and Ystrad Towy; and Morgan Fychan, lord of the territory between Nedd and Afan and Cilfai, and lord paramount of Morganwg."
It was named after Dinefwr Castle which was the court of the House of Dinefwr and one of the three principal royal courts of Wales with Aberffraw and Shrewsbury.
This branch would compete with House Aberffraw for supremacy and influence in Wales throughout the 10th, 11th, and 12th century, with Powys variously ruled between them.
On the death of Sir John Wynn in 1719, his heiress Jane Thelwall inherited both the Wynnstay estate and the Wynn claim to Aberffraw.
Through primogeniture, Sir David Williams-Wynn, 11th Baronet, may be heir to the Aberffraw legacy and claim as princes of Wales, and could theoretically use the appellation "Dafydd III of Wales".