See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4818/Cilmin%... (June 27, 2020; Anne Brannen, curator)

See Darrell Wolcott, "The Pedigree of Cynddelw Gam," http://www.ancientwalesstudies.org/id94.html for untangling and clarification of these lines. (January 18, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of "Ednowain Bendew II"; http://www.ancientwalesstudies.org/id92.html, [#29] (Steven Ferry, October 24, 2017.)

Please see Darrell Wolcott: The Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#68] (Steven Ferry, November 19, 2017.)

Please see Darrell Wolcott: The Royal Family of Gwynedd - The Unofficial "History" of Gruffudd, Nephew of Iago; http://www.ancientwalesstudies.org/id74.html. (Steven Ferry, December 4, 2019.)

Please see Darrell Wolcott: The Royal Family of Gwynedd - The Children of Gruffudd, Nephew of Iago; http://www.ancientwalesstudies.org/id80.html. (Steven Ferry, December 13, 2019.)

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