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Guidance Articles for Researchers
Single Family Analysis
Families of Mixed Origin
Family Pedigrees
Mis-identified Same-Named People in Wales
Battles and Historical Events
Ancient Welsh Territories
Legendary History Prior to 1st Century BC
Beli Mawr and Llyr Llediath in Welsh Pedigrees
Papers Related to Maxen Wledig
Bartrum's "Pedigrees of the Welsh Tribal Patriarchs"
Catel Durnluc aka Cadell Ddyrnllwg
The Royal Family of Powys
The Royal Family of Gwynedd
Men Descended from Tudwal Gloff
Royal Family of Gwent/ Glamorgan
The 5 Plebian Tribes of Wales
Glast and the Glastening
Rulers of Brycheiniog - The Unanswered Questions
The Men of Collwyn ap Tangno of Lleyn
Edwin of Tegeingl and his Family
Ithel of Bryn in Powys
Idnerth Benfras of Maesbrook
The Clan of Tudor Trevor
Trahaearn ap Caradog of Arwystli
The Family of Trahaearn ap Caradog
Cadafael Ynfyd of Cydewain
Maredudd ap Owain, King of Deheubarth
The Era of Llewelyn ap Seisyll
Cynfyn ap Gwerystan, the Interim King
The Consorts and Children of Gruffudd ap Llewelyn
The First Wife of Bleddyn ap Cynfyn
The Brief Life of Gruffudd ap Maredudd
Owain Brogyntyn and his Family
Eunydd son of Gwenllian
Sandde Hardd of Mortyn
The Floruit of Einion ap Seisyllt
Cowryd ap Cadfan of Dyffryn Clwyd
Owain ap Cadwgan and Nest ferch Rhys - An Historic Fiction?
The "sons" of Owain ap Cadwgan ap Bleddyn
Marchweithian, Lord of Is Aled, Rhufoniog
Osbwrn Wyddel of Cors Gedol
Bradwen of Llys Bradwen in Meirionydd
Ednowain ap Bradwen
Who Was Sir Robert Pounderling?
Eidio Wyllt - What Was His Birthname?
Gruffudd ap Rhys, the Homeless Prince
The Children of Lord Rhys
Maredudd Gethin ap Lord Rhys
The 'Next Heir' of Morgan of Caerleon

       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.