Ieuan ap Rhys Wyn

Please see Darrell Wolcott: The Muddled Pedigrees of Sir John Wynn of Gwydir; http://www.ancientwalesstudies.org/id115.html. (Steven Ferry, March 28, 2020.)

Please see Darrell Wolcott: Marchweithian of Is Aled - Further Notes; http://www.ancientwalesstudies.org/id318.html. (Steven Ferry, September 9, 2023.)

See Peter Bartrum, https://media.geni.com/p13/92/9d/09/7a/5344485e4b5f8fb0/marchudd_26_original.png?hash=2f0eb75d1fe4b23b576883b566b6960fc3c7cfd5e941ea1fcc8c211c7cff03e6.1732435199 (July 23, 2022; Anne Brannen, curator)

Please see Peter Bartrum: Holland 1; https://www.geni.com/documents/view?doc_id=6000000173409359931 & Marchudd 26; https://www.geni.com/documents/view?doc_id=6000000173393022896 (Steven Ferry, November 23, 2023.)