Efa verch Madog Goch

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5576/Bleddyn... (May 30, 2017; Anne Brannen, curator)

Please see Darrell Wolcott: Three Men Called Iorwerth Goch "ap Maredudd": http://www.ancientwalesstudies.org/id140.html. Wolcott notes that the 1165 Madog ap Iorwerth Goch died in 1194 without issue and that he is often confused with the Madog Goch of c. 1145, son of the Powys Iorwerth Goch. (Steven Ferry, September 6, 2020.)

See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392791978 (November 8, 2022; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4911/Tudur%2... (June 12, 2018; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/5299/Bleddyn... (May 6, 2017; Anne Brannen, curator)

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/4737/Bleddyn... (March 23, 2017; Anne Brannen, curator)

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