Trahaearn Goch ap Madog, of Lleyn

Please see Darrell Wolcott: Pedigree of Cynddelw Gam of Ystrad Alun; http://www.ancientwalesstudies.org/id94.html; [#275] (Steven Ferry, December 6, 2017.)

Please see Darrell Wolcott: Trahaearn Goch of Lleyn; http://www.ancientwalesstudies.org/id119.html. NOTE: do NOT conflate this man with the c. 1220 Trahaearn ap Madog ap Rhys Gloff in the Deheubarth lines from Cadell ap Einion. (Steven Ferry, August 18, 2020)

Please see Darrell Wolcott: The Men of Lleyn - How They Got There; http://www.ancientwalesstudies.org/id118.html. (Steven Ferry, August 17, 2020.)

Please see Darrell Wolcott: Einion ap Celynin of Llwydiarth; http://www.ancientwalesstudies.org/id138.html. (Steven Ferry, October 18, 2020.

Please see Peter Bartrum: Dafydd Fychan; https://www.geni.com/documents/view?doc_id=6000000173388881841 & Trahaearn Goch of Lleyn 1; https://www.geni.com/documents/view?doc_id=6000000173395368884 (Steven Ferry, June 17, 2023.)

Please see Darrell Wolcott: Marchweithian of Is Aled - Further Notes; http://www.ancientwalesstudies.org/id318.html. (Steven Ferry, September 9, 2023.)