Idwal ap Gruffydd

See Peter Bartrum, https://cadair.aber.ac.uk/dspace/bitstream/handle/2160/6516/TABLES%... (May 27, 2018; Anne Brannen, curator)

Gruffydd and his --- wife had two children:

3. MAREDUDD {? – 1068 or after). The Annales Cambriæ record war in 1068 betweeen "filios Kenwin, scilicet Bledin et Ruallo" and "filios Grifini, scilicet Maredut et Idwal" in which the latter were defeated.[444] The Chronicle of the Princes of Wales records that "the action of Mechain took place between Bleddyn and Rhiwallon, sons of Cynvyn, Maredudd and Ithel, sons of Gruffudd" in 1068, adding that "Ithel was killed in the battle and Maredudd died of cold in his flight, and Rhiwallon son of Cynvyn was slain”.[445]

4.IDWAL {? – killed in battle Mechain 1068 [sic,1070]). The Annales Cambriæ record war in 1068 betweeen "filios Kenwin, scilicet Bledin et Ruallo" and "filios Grifini, scilicet Maredut et Idwal" in which the latter were defeated.[446] The Chronicle of the Princes of Wales records that "the action of Mechain took place between Bleddyn and Rhiwallon, sons of Cynvyn, Maredudd and Ithel, sons of Gruffudd" in 1068, adding that "Ithel was killed in the battle, and Maredudd died of cold in his flight, and Rhiwallon son of Cynvyn was slain”. [447] [http://fmg.ac/Projects/MedLands/WALES.htm#Gruffydddied1063]

Historic UK: "Kings and Princes of Wales"

"In 1070, Gruffud’s sons challenged Bleddyn and Rhiwallon in an attempt to win back part of their fathers kingdom. Both sons were killed at the Battle of Mechain. Rhiwallon also lost his life in the battle, leaving Bleddyn to rule Gwynedd and Powys alone. Bleddyn was killed in 1075 by King Rhys ab Owain of Deheubarth." [https://www.historic-uk.com/HistoryUK/HistoryofWales/Kings-Princes-...]