Maredudd Hen ap Hywel, Lord of Edeyrnion

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4705/Bleddyn... (June 7, 2017; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5055/bleddyn... (December 23, 2016; Anne Brannen, curator)

See Darrell Wolcott, "Cadfael Ynfyd," http://www.ancientwalesstudies.org/id150.html - for help in the untangling of these lines (May 26, 2016; Anne Brannen, curator).

Please see Darrell Wolcott: The Royal Family of Gwynedd - The Children of Gruffudd, Nephew of Iago; http://www.ancientwalesstudies.org/id80.html. (Steven Ferry, January 2, 2020.)

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

Please see Darrell Wolcott: Maredudd ap Robert, Lord of Cedewain; http://www.ancientwalesstudies.org/id67.html. (Steven Ferry, July 12, 2020.)

Please see Darrell Wolcott: Sandde Hardd of Mortyn; http://www.ancientwalesstudies.org/id30.html. (Steven Ferry, August 8, 2020.)

Please see Darrell Wolcott: Llowdden Hen of Ulwch Aeron; http://www.ancientwalesstudies.org/id262.html. (Steven Ferry, March 20, 2021.)

Please see Darrell Wolcott: Pedigree of Madog ap Idnerth; http://www.ancientwalesstudies.org/id267.html; [#112]. (Steven Ferry, June 20, 2021.)

Please see Darrell Wolcott: Rhiryd Flaidd, Lord of Penllyn; http://www.ancientwalesstudies.org/id290.html. (Steven Ferry, February 27, 2022.)

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

Please see Darrell Wolcott: Kingship of Gwynedd - 1170 to 1175: http://www.ancientwalesstudies.org/id301.html (Steven Ferry, September 8, 2022.)

Please see Darrell Wolcott: Rhiryd ap Rhiwallon - Who Was He?; http://www.ancientwalesstudies.org/id323.html (Steven Ferry, March 27, 2024.)