Dwyfnerth ap Madog

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173393063941 (February 5, 2023; Anne Brannen, curator)

See Darrell Wolcott, http://www.ancientwalesstudies.org/id93.html, "Pedigree of the Ancient Lords of Ial," for the untangling of these lines. (April 21, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of the Ancient Lords of Ial; http://www.ancientwalesstudies.org/id93.html. (Steven Ferry, July 14, 2017.)

http://www.our-royal-titled-noble-and-commoner-ancestors.com/p4866....