Lleucu verch Hwfa

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392255924 June 2, 2023; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4705/Bleddyn... (June 7, 2017; Anne Brannen, curator)

See Darrell Wolcott, "Cadfael Ynfyd," http://www.ancientwalesstudies.org/id150.html - for help in the untangling of these lines (May 26, 2016; Anne Brannen, curator).

Please see Darrell Wolcott: Cadafael Ynfyd of Cydewain; http://www.ancientwalesstudies.org/id150.html. (Steven Ferry, July 10, 2020.)

Please see Peter Bartrum: https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4902/Tudur%2... (Steven Ferry, November 28, 2020.)

Please see Darrell Wolcott: Hywel ap Maredudd ap Bleddyn; http://www.ancientwalesstudies.org/id295.html. (Steven Ferry, August 18, 2022.)