Beli I ap Selyf I

See Darrell Wolcott, "The Pedigree of Cynddelw Gam," http://www.ancientwalesstudies.org/id94.html for untangling and clarification of these lines. (January 21, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#110] (Steven Ferry, November 21, 2017.)

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #18 Maredudd Benwyn; http://www.ancientwalesstudies.org/id188.html. (Steven Ferry, September 23, 2019.)

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #21 Gwenwys or Cadwgan Wenwys; http://www.ancientwalesstudies.org/id191.html. (Steven Ferry, September 28, 2019.)

Please see Darrell Wolcott: The Royal Family of Powys - End of the Powys Dynasty; http://www.ancientwalesstudies.org/id14.html. (Steven Ferry, October 18, 2019.)

Please see Darrell Wolcott: The Royal Family of Powys - The "Mael Maelienydd" in Medieval Pedigrees; http://www.ancientwalesstudies.org/id76.html. (Steven Ferry, October 22, 2019.)

Please see Darrell Wolcott: The Royal Family of Powys - Gwrgi of Castell Caereinion; http://www.ancientwalesstudies.org/id77.html. (Steven Ferry, November 13, 2019.)

Please see Darrell Wolcott: The Enigmatic Elystan Glodrydd; http://www.ancientwalesstudies.org/id199.html. (Steven Ferry, August 11, 2020.)

Please see Darrell Wolcott: Pedigree of Madog ap Idnerth; http://www.ancientwalesstudies.org/id267.html; [#9]. (Steven Ferry, May 16, 2021.)