Ysbwys ap Eidio Wyllt

See Darrell Wolcott, http://www.ancientwalesstudies.org/id125.html -- for the untangling of these lines. (January 14, 2016; Anne Brannen, curator)

Please see Darrell Wolcott: Sorting Out the Gwaithfoeds; http://www.ancientwalesstudies.org/id125.html. (Steven Ferry, September 5, 2020.)

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: Welshmen Named Maenyrch; http://www.ancientwalesstudies.org/id310.html (Steven Ferry, January 23, 2023.)

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