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King of Garthmadrun, Wales
Please see Darrell Wolcott: The Lands Called Garthmadryn; http://www.ancientwalesstudies.org/id265.html. (Steven Ferry, may 4, 2021.)
See Peter Bartum, https://www.geni.com/documents/view?doc_id=6000000173393115923 (February 8, 2023; Anne Brannen, curator)
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Brycheiniog, Powys, Wales, United Kingdom
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