Cynwrig ap Gruffudd Fychan

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

See Peter Bartrum, http://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5592/Bleddyn%... (January 20, 2017; 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.)