Maredudd ap Cadwgan, arglwydd of Meirionydd

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5210/Bleddyn... (June 19, 2017; 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 17, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: The Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#30] (Steven Ferry, November 16, 2017.)

Please see Darrell Wolcott: Henry, the Forgotten Son of Cadwgan ap Bleddyn; http://www.ancientwalesstudies.org/id117.html. (Steven Ferry, April, 5, 2020.)

Please see Darrell Wolcott: Hywel ap Maredudd ap Bleddyn; http://www.ancientwalesstudies.org/id295.html. (Steven Ferry, August 18, 2022.)