Nielsen Hayden genealogy

William Addams Reitwiesner, "The Children of Joan, Princess of North Wales." The Genealogist 1:80, Spring 1980.

• Title	William Addams Reitwiesner, "The Children of Joan, Princess of North Wales." The Genealogist 1:80, Spring 1980.
  Source ID	S839
  Linked to (17)	(One of the several mistresses of Llywelyn ap Iorwerth) Llywelyn Fawr ap Iorwerth Gwladus Ddu John de Brewes William de Brewes Maud de Briouze Walter IV de Clifford Ralph de Mortimer Roger de Mortimer Aline de Multon Margaret ferch Llywelyn John Giffard Joan of England Family: Roger de Mortimer / Maud de Briouze Family: Llywelyn Fawr ap Iorwerth / (One of the several mistresses of Llywelyn ap Iorwerth) Family: Llywelyn Fawr ap Iorwerth / Joan of England Family: Walter IV de Clifford / Margaret ferch Llywelyn