Alo ap Rhiwallon

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4982/aleth%2... (December 15, 2016; Anne Brannen, curator)

Please see Darrell Wolcott: The Royal Family of Powys - Gwrgi of Castell Caereinion; http://www.ancientwalesstudies.org/id77.html. (Steven Ferry, November 12, 2019.)

Please see Darrell Wolcott: The 5 Plebian Tribes of Wales; http://www.ancientwalesstudies.org/id201.html. (Steven Ferry, January 27, 2020.)

Please see Darrell Wolcott: Einion ap Celynin of Llwydiarth; http://www.ancientwalesstudies.org/id138.html. (Steven Ferry, August 25, 2020.)

Please see Darrell Wolcott: Ednowain ap Bradwen; http://www.ancientwalesstudies.org/id196.html. (Steven Ferry, September 2, 2020.)

Please see Darrell Wolcott: Pedigree of Madog ap Idnerth; http://www.ancientwalesstudies.org/id267.html; [#69;109]. (Steven Ferry, June 19, 2021.)