Madog ap Bleddyn

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5055/bleddyn... (December 23, 2016; Anne Brannen, curator)

Please see Darrell Wolcott: The Royal Family of Gwynedd - The Unofficial "History" of Gruffudd, Nephew of Iago; http://www.ancientwalesstudies.org/id74.html. (Steven Ferry, December 4, 2019.)

Please see Darrell Wolcott: Edwin of Tegeingl and His Family - Uchdryd ap Edwin - the Younger Son; http://www.ancientwalesstudies.org/id86.html. (Steven Ferry, June 11, 2020.)

Please see Darrell Wolcott: Trahaearn ap Caradog of Arwystli; http://www.ancientwalesstudies.org/id68.html. (Steven Ferry, July 7, 2020.)

Please see Darrell Wolcott; The First Wife of Bleddyn ap Cynfyn; http://www.ancientwalesstudies.org/id148.html. (Steven Ferry, July 23, 2020.)

Please see Darrell Wolcott: Owain ap Cadwgan and Nest ferch Rhys-an Historic Fiction?; http://www.ancientwalesstudies.org/id160.html. (Steven Ferry, August 14, 2020)

Please see Darrel Wolcott: The Family of Trahaearn ap Caradog; http://www.ancientwalesstudies.org/id240.html. (Steven Ferry, August 29, 2020.)