University of Hull Royal Database (England), Author Address: @ d of Llywelyn the Great & Joanna of England See The House of
Clifford, pp33-35 & 'The Children of Joan, Princess of Wales'
William Addams Reitwiesner, The Genealogist, 1980, vol. 1,
No.1,p83.

The cited information was published by University of Hull, Hull, UK HU6 7RX, 1994, 1995, 1996 (Ref: d of Llywelyn the Great & Joanna of England See The House of
Clifford, pp33-35 & 'The Children of Joan, Princess of Wales'
William Addams Reitwiesner, The Genealogist, 1980, vol. 1,
No.1,p83.) The author/originator was Brian Tompsett, Dept of Computer Science.

• Source Notes

  Usually reliable but sometimes includes hypothetical lines,
  mythological figures, etc.

• References (2)
  • Parent Source: University of Hull Royal Database (England), Author Address:
  • Individual: Marared Drwyndon verch Llywelyn Fawr