Iorwerth Goch ap Maredudd, of Cae Hywel & Creuddyn

See Darrell Wolcott, http://www.ancientwalesstudies.org/id140.html, for a discussion of the descendants of three different Iorwerths Goch who are conflated in the manuscripts. (May 27, 2017; Anne Brannen, curator)

See Darrell Wolcott, "The Pedigree of Cynddelw Gam," http://www.ancientwalesstudies.org/id94.html for untangling and clarification of these lines. (February 29, 2016, Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5096/bleddyn... (May 26, 2017; Anne Brannen, curator)

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#196] (Steven Ferry, November 28, 2017.)

Please see Darrell Wolcott: Welsh Origins of the Peverel Family; http://www.ancientwalesstudies.org/id50.html. (Steven Ferry, April 18, 2020.)

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

Please see Darrell Wolcott: Three Men Called Iorwerth Goch "ap Maredudd"; http://www.ancientwalesstudies.org/id140.html. (Steven Ferry, September 6, 2020.)

A genealogical and heraldic history of the commoners of Grt Britain and Ireland by John Burke.
Kinaston of Oteley Park, page 357. https://books.google.com