| Generation 1 - William Peter McMahan: Born - 3 Nov 1854 - Sevier County, Tennessee |
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| Generation 1 - William Peter McMahan: Buried - - Mcmahan Cemetery, Sevier County, Tennessee |
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| Generation 2 - James Peter McMahan: Born - 22 Aug 1819 - Sevier County, Tennessee |
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| Generation 2 - James Peter McMahan: Buried - - Mcmahan Cemetery, Sevier County, Tennessee |
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| Generation 2 - Nancy L. Henderson: Born - 13 Dec 1827 - Tennessee |
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| Generation 2 - Nancy L. Henderson: Buried - - Mcmahan Cemetery, Sevier County, Tennessee |
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| Generation 3 - Robert McMahan: Born - 1794 - Tennessee |
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| Generation 3 - Robert McMahan: Buried - - Blount County, Tennessee |
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| Generation 3 - Hulda Hatcher: Born - 1794 - Tennessee |
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| Generation 3 - William H. Henderson: Born - 11 Feb 1786 - Tennessee |
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| Generation 3 - William H. Henderson: Buried - - Shiloh Cemetery, Pigeon Forge, Sevier County, Tennessee |
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| Generation 3 - Mary Catherine Cannon: Born - 9 Feb 1786 - Tennessee |
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| Generation 3 - Mary Catherine Cannon: Buried - - Shiloh Cemetery, Pigeon Forge, Sevier County, Tennessee |
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| Generation 4 - James Wellington McMahan: Born - Abt 1750/1755 - Dublin, Ireland |
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| Generation 4 - James Wellington McMahan: Died - 16 Sep 1831 - Sevierville, Sevier County, Tennessee |
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| Generation 4 - James Wellington McMahan: Buried - - Sevier County, Tennessee |
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| Generation 4 - James Wellington McMahan & Rachel Calvert: Married - 1 Dec 1788 - , Botetourt, Virginia |
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| Generation 4 - Rachel Calvert: Born - Abt 1760 - England |
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| Generation 4 - Elizabeth: Born - 1766 - , Virginia |
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