Marchweithian ap Tangwel, Lord of Is Aled in Rhufoniog

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, [#71] (Steven Ferry, November 2, 2017.)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#125] [#275] (Steven Ferry, December 6, 2017.)

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #17 Caradog Freichfras; http://www.ancientwalesstudies.org/id185.html. (Steven Ferry, September 22, 2019.)

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #23 Marchweithian; http://www.ancientwalesstudies.org/id193.html. (Steven Ferry, September 29, 2019.)

Please see Darrell Wolcott: The Royal Family of Powys - Powys Succession after 823; http://www.ancientwalesstudies.org/id13.html. (Steven Ferry, October 17, 2019.)

Please see Darrell Wolcott: Cadafael Ynfyd of Cydewain; http://www.ancientwalesstudies.org/id150.html. (Steven Ferry, July 10, 2020.)

Please see Darrell Wolcott: The Men of Lleyn - How They Got There; http://www.ancientwalesstudies.org/id118.html. (Steven Ferry, August 17, 2020.)

Please see Darrell Wolcott: Marchweithian, Lord of Is Aled in Rhufoniog; http://www.ancientwalesstudies.org/id204.html. (Steven Ferry, August 27, 2020.)

Please see Darrell Wolcott: The 5 Dafydd Llwyds of Llanwrin Parish; http://www.ancientwalesstudies.org/id254.html. (Steven Ferry, February 12, 2021.)

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

~• A SUMMARY of sorts of his connections and location appears lower in his descendant list at: Robert ap Rhys Fawr, Chaplain to Cardinal Wolsey