Cadwgan ab Ystrwyth

See Darrell Wolcott, "The Pedigree of Cynddelw Gam," http://www.ancientwalesstudies.org/id94.html for untangling and clarification of these lines. (January 23, 2016, Anne Brannen, curator)

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: King Llewelyn ap Iorwerth and Ednyfed Fychan; http://www.ancientwalesstudies.org/id308.html (Steven Ferry, November 25, 2022.)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#239] (Steven Ferry, August 29, 2023.)

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