1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), pp. 20, 22, 26, 31, Los Angeles Public Library, 929.729 D263.
2Boyer, Carl, Medieval Welsh Ancestors of Certain Americans (Santa Clarita, California: C. Boyer, 2004.), pp. 12, 15, Family History Library, 942.9 D2bc.
3Lloyd, Jacob Youde William, The History of the Princes, the Lords Marcher and the Ancient Nobility of Powys Fodog and the Ancient Lords of Arwystli, (London: T. Richards, 1881-1887.), 5:42, Family History Library, 942.9 D2L.
4Nicholas, Thomas, Annals and Antiquities of the Counties and County Families of Wales (London: Longman's, Green, & Reeder, 1875.), 2:792, Family History Library, 942.9 H2n.
1Boyer, Carl, Medieval Welsh Ancestors of Certain Americans (Santa Clarita, California: C. Boyer, 2004.), p. 15, Family History Library, 942.9 D2bc.
2Lloyd, Jacob Youde William, The History of the Princes, the Lords Marcher and the Ancient Nobility of Powys Fodog and the Ancient Lords of Arwystli, (London: T. Richards, 1881-1887.), 5:42, Family History Library, 942.9 D2L.
1Boyer, Carl, Medieval Welsh Ancestors of Certain Americans (Santa Clarita, California: C. Boyer, 2004.), p. 15, Family History Library, 942.9 D2bc.
1Boyer, Carl, Medieval Welsh Ancestors of Certain Americans (Santa Clarita, California: C. Boyer, 2004.), p. 15, Family History Library, 942.9 D2bc.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), pp. 20, 22, 26, Los Angeles Public Library, 929.729 D263.
2Stephen, Sir Leslie & Sir Sidney Lee (Editors), The Dictionary of National Biography: From the Earliest Times to 1900 (Oxford, England: Oxford University Press, 1993.), 12:747, Family History Library, 920.042 D561n 1993.
3Calendar of the Patent Rolls Preserved in the Public Record Office -- Henry III (Nendeln, Liechtenstein: Kraus Reprint, 1971.), 2:458, Family History Library, 942 N23gpa.
4Nicholas, Thomas, Annals and Antiquities of the Counties and County Families of Wales (London: Longman's, Green, & Reeder, 1875.), 2:792, Family History Library, 942.9 H2n.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), pp. 22, 26, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 22, Los Angeles Public Library, 929.729 D263.
2Stephen, Sir Leslie & Sir Sidney Lee (Editors), The Dictionary of National Biography: From the Earliest Times to 1900 (Oxford, England: Oxford University Press, 1993.), 12:747, Family History Library, 920.042 D561n 1993.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 22, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 12, Los Angeles Public Library, 929.729 D263.
2Baldwin, Stewart, Llywelyn ap Iorwerth Ancestor Table, https://sites.rootsweb.com/~medieval/llywelyn.htm, #524416.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 12, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 12, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 16, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), pp. 4, 33, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), pp. 4, 33, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), pp. 28, 33, Los Angeles Public Library, 929.729 D263.
2Burke's Guide to the Royal Family (London: Burke's Peerage, 1973.), p. 323, Family History Library, 942 D22bgr.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 33, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 12, Los Angeles Public Library, 929.729 D263.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 12, Los Angeles Public Library, 929.729 D263.
Idwal "Iwrch" ap CADWALADR King of Wales
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 13, Los Angeles Public Library, 929.729 D263.
2Baldwin, Stewart, Llywelyn ap Iorwerth Ancestor Table, https://sites.rootsweb.com/~medieval/llywelyn.htm, #32776.
Cadwaladr "Vendiuid" ap CADWALLON King of Gwynedd
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 12, Los Angeles Public Library, 929.729 D263.
2Baldwin, Stewart, Llywelyn ap Iorwerth Ancestor Table, https://sites.rootsweb.com/~medieval/llywelyn.htm, #65552.
1Davies, Roderick D., A Pedigree of the Royal Tribes of Wales (Shawbury: Rhodri ap Dafydd, 1999.), p. 12, Los Angeles Public Library, 929.729 D263.
2Baldwin, Stewart, Llywelyn ap Iorwerth Ancestor Table, https://sites.rootsweb.com/~medieval/llywelyn.htm, #65553.