Ithel Llwyd ab Ithel Gam Hen, arglwydd of Mostyn

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392255930 (July 8, 2023; Anne Brannen, curator)

See Darrell Wolcott, the Pedigree of Cynddelw Gam, for the untangling of these lines: http://www.ancientwalesstudies.org/id94.html (March 4, 2016; Anne Brannen, curator).

Please see Darrell Wolcott: Pedigree of "Ednowain Bendew II"; http://www.ancientwalesstudies.org/id92.html, [#22] [#45] [#68] [#91] (Steven Ferry, November 7, 2017.)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#233] [#234] [#235] [#236] [#241] (Steven Ferry, December 1, 2017.)

Please see Darrell Wolcott: The Muddled Pedigrees of Sir John Wynn of Gwydir; http://www.ancientwalesstudies.org/id115.html. (Steven Ferry, March 28, 2020.)

Please see Darrell Wolcott: The Welsh Ancestry of the Tudor Dynasty; http://www.ancientwalesstudies.org/id217.html. (Steven Ferry, April 8, 2020.)

Please see Darrell Wolcott: Edwin of Tegeingl and His Family - Aldud ap Owain of Tegeingl; http://www.ancientwalesstudies.org/id83.html. (Steven Ferry, June 18, 2020.)

Please see Darrell Wolcott: Edwin of Tegeingl and His Family - Maredudd and Philip ap Uchdryd; http://www.ancientwalesstudies.org/id88.html. (Steven Ferry, June 21, 2020.)

Please see Darrell Wolcott: The Ancestry of Owain Glyndwr; http://www.ancientwalesstudies.org/id200.html. (Steven Ferry, September 13, 2020.)

Please see Darrell Walcott: Maredudd ap Ednowain Bendew; http://www.ancientwalesstudies.org/id243.html. (Steven Ferry, November 11, 2020.)

Please see Darrell Wolcott: Hwfa ap Cynddelw, Lord of Llifon: http://www.ancientwalesstudies.org/id322.html (Steven Ferry, January 25, 2025.)