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Immediate Family
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father
About Gwylog ap Tewdwr
Please see Darrell Wolcott: Bartrum's "Pedigrees of the Welsh Tribal Patriarchs" #16 Rhys Goch of Ystrad Yw; http://www.ancientwalesstudies.org/id184.html. (Steven Ferry, September 21, 2019.)
Please see Darrell Wolcott: Rulers of Brycheiniog - The Unanswered Questions; http://www.ancientwalesstudies.org/id161.html. (Steven Ferry, March 17, 2020.)
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Gwylog ap Tewdwr's Timeline
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840
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