Gwrgeneu ab Uchdryd

See Darrell Wolcott, "Llewelyn ap Hoedliw" -- http://www.ancientwalesstudies.org/id154.html -- for the untangling of these lines. (April 25, 2016; Anne Brannen, curator)

Please see Darrell Wolcott: The Royal Family of Gwynedd: Einion ap Llywarch of Carmanthenshire; http://www.ancientwalesstudies.org/id163.html. (Steven Ferry, April 7, 2017.)

Please see Darrell Wolcott: Einion ap Celynin of Llwydiarth; http://www.ancientwalesstudies.org/id138.html. (Steven Ferry, June 18, 2017.)

Based on charting provided by Darrell Wolcott, Center for the Study of Ancient Wales. Peter Bartrum, in his Aleth charts, conflates two cousin lines, one descending from c. 1050 Aleth ap Uchdrydd, the other form his brother, c. 1055 Gwrgeneu ap Uchdryd, with both sides having a long chain of same named men. ( Steven Ferry, April 16, 2023.)