Lleucu verch Deio

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173393640897 (January 21, 2023; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5573/Bleddyn... (December 26, 2016; Anne Brannen, curator)

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

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173395725889 (November 5, 2022; Anne Brannen, curator)

See Lloyd, "The History of the Lords Marcher," 1884, Whiting and Co. vol IV, p. 104. His information is taken from Harley MS 4181.