Arthgal ap Dyfnwal

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392989885 (February 6, 2023; Anne Brannen, curator)

Please see Darrell Wolcott: Harleian Ms 3859; http://www.ancientwalesstudies.org/id129.html. (Steven Ferry, June 11, 2021.)

Please see Dr. J White-Phillips: Rhun ap Arthgal and His Family; http://www.ancientwalesstudies.org/id274.html. (Steven Ferry, June 26, 2021.)

Please see Dr. J White-Phillips: Who Was 'Greg, King of the Picts'? ; http://www.ancientwalesstudies.org/id275.html. (Steven Ferry, June 27, 2021.)