Owain ap Cadwgan

Please see Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173395725876 Selyf 1 (May 11, 2024; Anne Brannen, curator)

Please see Darrell Wolcott: Eidio Wyllt - What Was His Birthname?; http://www.ancientwalesstudies.org/id156.html. (Steven Ferry, September 9, 2020.)

Please see Darrell Wolcott: Selyf, "Brennin" Dyfed; http://www.ancientwalesstudies.org/id261.html. (Steven Ferry, March 18, 2021.)

Please see Darrell Wolcott: Rhydderch Ddu of Tal-y-Llyn; http://www.ancientwalesstudies.org/id314.html (Steven Ferry, April 9, 2023.)