Madog ap Samuel

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5577/cadafae... (December 12, 2019; Anne Brannen, curator)

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

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

Please see Darrell Wolcott: The Childrn of Owain Gwynedd; http://www.ancientwalesstudies.org/id302.html (Steven Ferry, September 11, 2022.)