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Immediate Family
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father
About Isaac ab Eifion
See Peter Bartrum, https://www.geni.com/documents/view?doc_id=6000000173392948864 (February 3, 2023; Anne Brannen, curator)
Please see Darrell Wolcott; Harleian Ms 3859; http://www.ancientwalesstudies.org/id129.html. (Steven Ferry, March 10, 2021.)
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Isaac ab Eifion's Timeline
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