Iestyn ap Gwrgan

See Darrell Wolcott, the Pedigree of Cynddelw Gam, for the untangling of these lines: http://www.ancientwalesstudies.org/id94.html (March 2, 2016; Anne Brannen, curator).

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#209] (Steven Ferry, December 28, 2018.)

Please see Darrell Wolcott: The Conquest of Glamorgan - Further Notes; http://www.ancientwalesstudies.org/id226.html. (Steven Ferry, August 20, 2020.)

Please see Darrell Wolcott: Was Iestyn ap Gwrgan the Founder of One of the 5 Royal Tribes; http://www.ancientwalesstudies.org/id229.html. (Steven Ferry, August 21, 2020.)

Please see Darrell Wolcott: Pedigree of Madog ap Idnerth; http://www.ancientwalesstudies.org/id267.html; [#12]. (Steven Ferry, May 16, 2021.)

Please see Darrell Wolcott: Bleddyn ap Maenyrch, King of Brycheiniog; http://www.ancientwalesstudies.org/id313.html (Steven Ferry, March 2, 2023.)

Please see Darrell Wolcott: Family of Drymbenog ap Maenyrch of Brycheiniog; http://www.ancientwalesstudies.org/id312.html (Steven Ferry, May 21, 2023.)

Please see Darrell Wolcott: Ifor Bach, Lord of Senghenydd; http://www.ancientwalesstudies.org/id316.html (Steven Ferry, August 4, 2023.)

Please see Darrell Wolcott: How Bartrum 'Lost' Hywel ap Gruffudd ap Ifor Bach; http://www.ancientwalesstudies.org/id317.html (Steven Ferry, August 9, 2023.)

Please see Darrell Wolcott: A Glamorgan Family in Gwynedd; http://www.ancientwalesstudies.org/id321.html (Steven Ferry, November 14, 2023.)