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Immediate Family
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daughter
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son
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mother
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brother
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brother
About Efrddyl verch Cynfarch
See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392255904 (February 5, 2023; Anne Brannen, curator)
Please see Darrell Wolcott: Harleian Ms 3859; http://www.ancientwalesstudies.org/id129.html. (Steven Ferry, March 9, 2021.)
Please see Darrell Wolcott: Foundations of 'The Men of the North' - Part 2; http://www.ancientwalesstudies.org/id279.html. (Steven Ferry, July 9, 2021.)
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