Ieuan Gethyn ap Madog Cyffin

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392255930 (July 8, 2023; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5574/Bleddyn... (December 30, 2016; Anne Brannen, curator)

See Darrell Wolcott, "The Pedigree of Cynddelw Gam," http://www.ancientwalesstudies.org/id94.html for untangling and clarification of these lines. (April 13, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of "Ednowain Bendew II"; http://www.ancientwalesstudies.org/id92.html, [#28] (Steven Ferry, October 24, 2017.)

Please see Darrell Wolcott: The Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#253] [#254] [#276] (Steven Ferry, December 6, 2017.)

Please see Darrell Wolcott: The Shropshire Walcot Family - Chart XII: Newton Family; http://www.ancientwalesstudies.org/id106.html. (Steven Ferry, May 12, 2020.)

Please see Darrell Wolcott: Owain Brogyntyn and His Family; http://www.ancientwalesstudies.org/id224.html. (Steven Ferry, July 28, 2020.)

Please see Darrell Wolcott: Einion ap Celynin of Llwydiarth; http://www.ancientwalesstudies.org/id138.html. (Steven Ferry, October 21, 2020.)

Please see Darrell Wolcott: The Men of Pennant Melangell in Mochnant; http://www.ancientwalesstudies.org/id289.html. (Steven Ferry, February 8, 2022.)

Please see Darrell Wolcott: Rhiryd ap Rhiwallon - Who Was He?; http://www.ancientwalesstudies.org/id323.html (Steven Ferry, March 27, 2024.)

Please see Darrell Wolcott: Rhiryd ap Rhiwallon - Who Was He?; http://www.ancientwalesstudies.org/id323.html (Steven Ferry, March 28, 2024.)