William ap Thomas

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5144/Bleddyn... (July 22, 2019; Anne Brannen, curator)

Please see Peter Bartrum: Gruffudd Gethin 2 (D); https://www.geni.com/documents/view?doc_id=6000000173399121929 & Einion ap Gollwyn 11 (D); https://www.geni.com/documents/view?doc_id=6000000173398963894 & Bleddyn ap Maenyrch 28; https://www.geni.com/documents/view?doc_id=6000000173378409015 (Steven Ferry, March 25, 2023.)

Please see Darrell Wolcott: Three Conflated Brecknock Families; http://www.ancientwalesstudies.org/id324.html [Fam3: # 5] (Steven Ferry, October 6, 2024.)