Adda ap Meurig, of Mochnant

See Darrell Wolcott -- http://www.ancientwalesstudies.org/id138.html -- "Einion ap Celynin" -- for clarification of these lines. (April 26, 2016; Anne Brannen, curator)

Please see Darrell Wolcott: Three Men Called Iorwerth Goch "ap Maredudd"; http://www.ancientwalesstudies.org/id140.html. (Steven Ferry, September 6, 2020.)

Please see Darrell Wolcott: Einion ap Celynin of Llwydiarth; http://www.ancientwalesstudies.org/id138.html. (Steven Ferry, October 21, 2020.)