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Maredudd ap Owain, King of Deheubarth
Sandde Hardd of Mortyn
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Osbwrn Wyddel of Cors Gedol
Bradwen of Llys Bradwen in Meirionydd
Who Was Sir Robert Pounderling?
Sir Aaron ap Rhys
Eidio Wyllt - What Was His Birthname?
Ifor Bach, Lord of Senghenydd
Ancestors and Children of the Lord Rhys

       MEN OF COLLWYN AP TANGNO AND OF LLEYN

The Men of Lleyn - How They Got There

This paper suggests that a young man of Rhos married the heiress of Merfyn ap Rhodri Mawr, and that she carried Lleyn to her son, the ancestor of Collwyn ap Tangno.

The Betrayal of Meirion Goch Revisited

Discusses the medieval claim that this man betrayed Gruffudd ap Cynan of Gwynedd, and refutes that claim using logical arguments and chronological analysis.

Gwyn Ddistain, Seneschal for Llewelyn Fawr

Untangles two different men named Gwyn in the extended family descended from Collwyn ap Tangno, one of whom served the king of Gwynedd as his seneschal.

Trahaearn Goch of Lleyn

In this paper, we show why his pedigree is often conflated with an earlier "Trahaearn ap Madog" who descended from Rhys ap Tewdwr of Deheubarth.