Gwenllian verch Gwilym

See Peter Bartrum, http://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4733/EINION%2... (March 22, 2019; Anne Brannen, curator)

See Peter Bartrum, http://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5100/BLEDDYN%... (February 20, 2019; Anne Brannen, curator)

For a precis of the partners and children of Rhys ap Thomas, see Lawrence Buckley Thomas, The Thomas Book: Giving the Genealogies of Sir Rhys ap Thomas, K.G., the Thomas Family Descended From Him, and of Some Allied Families, Henry T. Thomas Company, New York, 1896, pp 19-20. (March 22, 2019; Anne Brannen, curator)