Sir Thomas Mostyn

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173426981951 (January 5, 2022; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5234/MARCHUD... (April 8, 2017; Anne Brannen, curator)

See Peter Bartrum: https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5569/BLEDDYN... (January 12, 2017; Anne Brannen, curator)

Please see Darrell Wolcott: Angharad, Heiress of Mostyn; http://www.ancientwalesstudies.org/id84.html. (Steven Ferry, June 21, 2020.)

https://biography.wales/article/s-MOST-MOS-1301

Richard ap Hywel , by his wife Catherine , daughter of Thomas Salusbury , the elder , of Lleweni , was the father of Thomas ( Mostyn ) , Hugh (d. young), Peter ( Peyrs , Piers ) , ancestor of the Mostyn s of Talacre (qq.v.) , and four daughters, of whom Janet became the wife of Gruffydd ap Ieuan ap Llywelyn Fychan (q.v.) .