St. Cynog Mawr ap Idnerth

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/6516/TABLES%... (May 31, 2018; Anne Brannen, curator)

See Darrell Wolcott, http://www.ancientwalesstudies.org/id99.html, for a chart of this family. (September 6, 2016, Anne Brannen, curator)

Please see Darrell Wolcott: Ancient Powys; http://www.ancientwalesstudies.org/id79.html. (Steven Ferry, October 8, 2019.)

Please see Darrell Wolcott: The Royal Family of Gwynedd - Wikipedia's Lame Biography of Rhodri Mawr; http://www.ancientwalesstudies.org/id165.html. (Steven Ferry, January 26, 2020.)

Please see Darrell Wolcott: The 5 Plebian Tribes of Wales; http://www.ancientwalesstudies.org/id201.html. (Steven Ferry, January 27, 2020.)

Please see Darrell Wolcott: The Shropshire Walcot Family - Chart II: Second Powys Dynasty; http://www.ancientwalesstudies.org/id99.html. (Steven Ferry, May 14, 2020.)

Please see Darrell Wolcott: The Men of Pennant Melangell in Mochnant; http://www.ancientwalesstudies.org/id289.html. (Steven Ferry, February 8, 2022.)