Efa verch Meurig

See Darrell Wolcott, "Aeron Paen ap Y Paen Hen," http://www.ancientwalesstudies.org/id65.html for help in untangling these lines (May 26, 2016; Anne Brannen, curator).

Please see Darrell Wolcott: Aaron Paen ap Y Paen Hen; http://www.ancientwalesstudies.org/id65.html. (Steven Ferry, July 5, 2020.)

Please see Darrell Wolcott: Pedigree of Madog ap Idnerth; http://www.ancientwalesstudies.org/id267.html; [#16]. (Steven Ferry, May 18, 2021.)