Gruffudd ab Ednyfed Fychan

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5266/bleddyn... (August 13, 2017; Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of "Ednowain Bendew II"; http://www.ancientwalesstudies.org/id92.html, [#28] (Steven Ferry, October 24, 2017.)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#123] [#237] (Steven Ferry, December 1 , 2017.)

Please see Darrell Wolcott: Angharad, Heiress of Mostyn; http://www.ancientwalesstudies.org/id84.html. (Steven Ferry, June 21, 2020.)

Please see Darrell Wolcott: The "Betrayal" by Meirion Goch Revisited; http://www.ancientwalesstudies.org/id90.html. (Steven Ferry, August 15, 2020.)

Please see Darrell Wolcott: Osbwrn Wyddel of Cors Gedol; http://www.ancientwalesstudies.org/id203.html. (Steven Ferry, August 30, 2020.)

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

Please see Darrell Wolcott: Tangwystl and Tangwystl; http://www.ancientwalesstudies.org/id296.html. (Steven Ferry, August 19, 2022.)

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

Please see Peter Bartrum: Gwalchmai 1; https://www.geni.com/documents/view?doc_id=6000000173392948830 & Marchudd 14; https://www.geni.com/documents/view?doc_id=6000000173393063899 (Steven Ferry, October 12, 2023.)

Please see Darrell Wolcott: Hwfa ap Cynddelw, Lord of Llifon: http://www.ancientwalesstudies.org/id322.html (Steven Ferry, January 23, 2024.)