Dafydd Llwyd ap Cynwrig, of Trefeilir

Please see Darrell Wolcott: The Welsh Ancestry of the Tudor Dynasty; http://www.ancientwalesstudies.org/id217.html. (Steven Ferry, April 8, 2020.)

Please see Peter Bartrum: https://www.geni.com/documents/view?doc_id=6000000173392536844, and https://www.geni.com/documents/view?doc_id=6000000173392952834. (Steven Ferry, September 20, 2020.)

From Darrell Wolcott, Center for the Study of Ancient Wales: " I date the mother of Owen Tudor as Marged (1370) ferch Dafydd Fychan (1330) ap Dafydd Llwyd (1300) ap Cynwrig (1270) ap Gronwy (1240) ap Cynwrig (1210) ap Gronwy (1180) ap Cynwrig (1150 ap Iorwerth (1120) ap Hwfa (1085)"; (Steven Ferry, July 29, 2021.)

Please see Darrell Wolcott: Hwfa ap Cynddelw, Lord of Llifon: http://www.ancientwalesstudies.org/id322.html [Which modifies the line from Margred to Hwfa as shown above] (Steven Ferry, January 30, 2024.)