Margred verch Ieuan

See Darrell Wolcott, the Pedigree of Cynddelw Gam, for the untangling of these lines: http://www.ancientwalesstudies.org/id94.html (April 11, 2016; Anne Brannen, curator).

See Peter Bartrum, http://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5259/bleddyn%... (January 23, 2017; Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#268] (Steven Ferry, December 5, 2017.)

Please see Peter Bartrum: Ithel Dalfrith 1; https://www.geni.com/documents/view?doc_id=6000000173392404853 & Gruffudd ap Cynan 6 (C); https://www.geni.com/documents/view?doc_id=6000000173398573935 [Bartrum has her as Morfudd, but the cites provided by Wolcott have her as Margred] (Steven Ferry, January 1, 2024.)