Howell Colunwy ap Meurig

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5569/BLEDDYN... (January 12, 2017; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5356/ELYSTAN... (March 30, 2017; Anne Brannen, curator)

Please see Peter Bartrum: Herast; https://www.geni.com/documents/view?doc_id=6000000173393042848 & Elystan Glodrydd 23 (A); https://www.geni.com/documents/view?doc_id=6000000173398542901 (Steven Ferry, November 15, 2023.)

Please see Darrell Wolcott: Generys "ap" Cadwgan Fychan; http://www.ancientwalesstudies.org/id327.html (Steven Ferry, February 5, 2025.)

Please see Darrell Wolcott: The Family of Caradog ap Rhys Gryg; http://www.ancientwalesstudies.org/id328.html (Steven Ferry, February 5, 2025.)