| Generation 1 - Samuel Underwood: Born - 4 May 1848 - Tennessee |
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| Generation 1 - Samuel Underwood: Died - 10 Apr 1925 - Sevier County, Tennessee |
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| Generation 1 - Samuel Underwood: Buried - 11 Apr 1925 - Oak Grove Cemetery, Sevier County, Tennessee |
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| Generation 2 - Thomas Underwood: Born - 4 Aug 1804 - Tennessee |
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| Generation 2 - Thomas Underwood: Buried - - Underwood Family Cemetery, Sevier County, Tennessee |
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| Generation 2 - Elizabeth Johnson: Born - 1 Aug 1813 - Tennessee |
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| Generation 2 - Elizabeth Johnson: Buried - - Underwood Family Cemetery, Sevier County, Tennessee |
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| Generation 3 - John Underwood: Born - 1767 - North Carolina |
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| Generation 3 - John Underwood: Buried - - Underwood Family Cemetery, Sevier County, Tennessee |
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| Generation 3 - Elizabeth Manifold: Buried - - Underwood Family Cemetery, Sevier County, Tennessee |
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