Gwrydr Goch ap Heilig

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #11 Llywarch Howlbwrch; http://www.ancientwalesstudies.org/id179.html. (Steven Ferry, September 12, 2019.)

Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #13 Helig ap Glannog; http://www.ancientwalesstudies.org/id181.html. (Steven Ferry, September 20, 2019.)

Please see Darrell Wolcott: Ynyr Gwent and Caradog Freich Fras; http://www.ancientwalesstudies.org/id25.html. (Steven Ferry, February 26, 2020.)

Please see Darrell Wolcott: Cadwgan of Nannau; http://www.ancientwalesstudies.org/id66.html. (Steven Ferry, July 16, 2020.)

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

Please see Darrell Wolcott: Three Men Called Iorwerth Goch "ap Maredudd"; http://www.ancientwalesstudies.org/id140.html. (Steven Ferry, September 6, 2020.)

Please see Darrell Wolcott: The Clan of Tudor Trevor; http://www.ancientwalesstudies.org/id55.html. (Steven Ferry, May 5, 2022.)