Meurig ap Edryd

Please see Darrell Wolcott: The Ancestry of Owain Glyndwr; http://www.ancientwalesstudies.org/id200.html. (Steven Ferry, September 13, 2020.)

Please see Darrell Wolcott: "Bartrum's Pedigrees of the Welsh Tribal Patriarchs" - #27 - Dafydd ap Llywarch of Eglwys Bach; http://www.ancientwalesstudies.org/id257.html. (Steven Ferry, March 16, 2021.)

Please see Peter Bartrum: Dafydd ap Llywarch; https://www.geni.com/documents/view?doc_id=6000000173389054844 (Steven Ferry, June 13, 2023.)