Gruffudd Fychan ap Gruffudd

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392923951 (April 28, 2023; Anne Brannen, curator

See Darrell Wolcott, "The Pedigree of Cynddelw Gam," http://www.ancientwalesstudies.org/id94.html for untangling and clarification of these lines. (January 21, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#92] (Steven Ferry, November 21, 2017.)

Please see Darrell Wolcott: Eunydd Son of Gwenllian; http://www.ancientwalesstudies.org/id51.html. (Steven Ferry, August 1, 2020.)