See Darrell Wolcott, http://www.ancientwalesstudies.org/id187.html, "The Children of Lord Rhys," for untangling of these lines. (April 21, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs"' # 4 Cadwgan Fantach; http://www.ancientwalesstudies.org/id172.html. (Steven Ferry, September 7, 2019.)

Please see Darrell Wolcott: The Children of Lord Rhys; http://www.ancientwalesstudies.org/id187.html. (Steven Ferry, September 15, 2020.)

Please see Darrell Wolcott: Gwgan ap Llewelyn ap Moriddig of Brycheiniog; http://www.ancientwalesstudies.org/id315.html (Steven Ferry, June 26, 2023.)

Please see Darrell Wolcott: Three Conflated Brecknock Families; http://www.ancientwalesstudies.org/id324.html [Fam3: # 21] (Steven Ferry, October 11, 2024.)

Please see Peter Bartrum: Cydifor Fawr 6; https://www.geni.com/documents/view?doc_id=6000000173377954152 & Rhys ap Tewdwr 3; https://www.geni.com/documents/view?doc_id=6000000173393013921 [conflated with c.1130 Maredudd ap Rhydderch & c.1190 Maredudd ap Rhydderch] (Steven Ferry, November 22, 2024.)