Llewelyn Sais ap Llewelyn

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392167913 (April 26, 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. (February 29, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#196] (Steven Ferry, November 28, 2017.)