| Generation 1 - Maj. George Earl "Earl G." Underwood: Born - 29 Dec 1919 - Tennessee |
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| Generation 1 - Maj. George Earl "Earl G." Underwood: Died - 7 Apr 1977 - Sevier County, Tennessee |
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| Generation 1 - Maj. George Earl "Earl G." Underwood: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 2 - Earl Griffin Underwood: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 2 - Ersa Johnson: Born - 19 Jan 1899 - Tennessee |
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| Generation 2 - Ersa Johnson: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 3 - Ulysses Edward Underwood: Born - 16 Mar 1869 - Tennessee |
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| Generation 3 - Ulysses Edward Underwood: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 3 - Nancy Mae Guynn: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 3 - George Coleman Johnson: Born - 9 Dec 1874 - Sevier County, Tennessee |
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| Generation 3 - George Coleman Johnson: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 3 - George Coleman Johnson & Sallie A. Cate: Married - 12 Apr 1896 - Jefferson County, Tennessee |
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| Generation 3 - Sallie A. Cate: Born - 19 Dec 1874 - Missouri |
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| Generation 3 - Sallie A. Cate: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 4 - John Thomas Underwood: Born - 6 Oct 1836 - Tennessee |
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| Generation 4 - John Thomas Underwood: Buried - - Underwood Family Cemetery, Sevier County, Tennessee |
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| Generation 4 - John Thomas Underwood & Mariah Jane Covington: Married - 19 Oct 1858 - Sevier County, Tennessee |
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| Generation 4 - Mariah Jane Covington: Born - 22 Nov 1834 - Tennessee |
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| Generation 4 - Mariah Jane Covington: Buried - - Underwood Family Cemetery, Sevier County, Tennessee |
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| Generation 4 - James T. Johnson: Born - 8 Aug 1852 - Tennessee |
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| Generation 4 - James T. Johnson: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 4 - James T. Johnson & Elizabeth Adeline Pollard: Married - - Sevier County, Tennessee |
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| Generation 4 - Elizabeth Adeline Pollard: Born - 7 May 1852 - Tennessee |
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| Generation 4 - Elizabeth Adeline Pollard: Buried - - Beech Springs Cemetery, Sevier County, Tennessee |
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| Generation 4 - Manning Cate: Born - - Tennessee |
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| Generation 4 - Ellen Bryan: Born - - Tennessee |
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