N.N. ferch Sitric "Silkbeard"

Please see Darrell Wolcott: The Royal Family of Gwynedd - The Unofficial "History" of Gruffudd, Nephew of Iago; http://www.ancientwalesstudies.org/id74.html. (Steven Ferry, December 4, 2019.)

Please see Darrell Wolcott: The Shropshire Walcot Family - Chart II: Second Powys Dynasty; http://www.ancientwalesstudies.org/id99.html. (Steven Ferry, May 14, 2020.)

Please see Darrell Wolcott: Cynfyn ap Gwerystan, the Interim King; http://www.ancientwalesstudies.org/id209.html. Wolcott is clear that this marriage is not documented, and is only his guess, and he does not name the woman.(Steven Ferry, July 21, 2020.)

Please see Darrell Wolcott: Gwyn ap Ednowain Bendew; http://www.ancientwalesstudies.org/id244.html. (Steven Ferry, January 2, 2021)

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