| Generation 1 - Nancy L. Williamson: Born - 4 Aug 1903 - Sevier County, Tennessee |
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| Generation 1 - Nancy L. Williamson: Buried - - P. A. Proffitt Cemetery, Sevier County, Tennessee |
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| Generation 1 - Nancy L. Williamson & Allen Walter Cole: Married - Aug 1920 - , Sevier County, Tennessee |
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| Generation 2 - Walker H. Williamson: Born - 13 Jun 1871 - Tennessee |
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| Generation 2 - Walker H. Williamson: Died - 9 Dec 1922 - Sevier County, Tennessee |
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| Generation 2 - Josia M. Cogdill: Born - Apr 1886 - Sevier County, Tennessee |
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| Generation 2 - Josia M. Cogdill: Died - 14 Apr 1925 - Sevier County, Tennessee |
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| Generation 3 - John Nelson Williamson: Born - Abt 1839 - Cocke County, Tennessee |
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| Generation 3 - Mary Jane Jenkins: Born - Abt 1838 - Cocke County, Tennessee |
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| Generation 3 - Mary Jane Jenkins: Died - 13 Dec 1917 - Sevier County, Tennessee |
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| Generation 3 - Mary Jane Jenkins: Buried - 15 Dec 1917 - Emerts Cove Cemetery, Sevier County, Tennessee |
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| Generation 3 - William Avery Cogdill: Born - 1 Apr 1861 - Georgia |
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| Generation 3 - William Avery Cogdill: Buried - - Elkmont Cemetery, Sevier County, Tennessee |
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| Generation 3 - William Avery Cogdill & Louisa S. Lyles: Married - 13 May 1880 - Sevier County, Tennessee |
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| Generation 3 - Louisa S. Lyles: Born - 24 Sep 1860 - Tennessee |
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| Generation 3 - Louisa S. Lyles: Died - 19 Feb 1938 - Sevier County, Tennessee |
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| Generation 3 - Louisa S. Lyles: Buried - 20 Feb 1938 - Elkmont Cemetery, Sevier County, Tennessee |
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| Generation 4 - Reuben Williamson: Born - Abt 1815 - Tennessee |
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| Generation 4 - Elizabeth "Betsy" Webb: Born - Feb 1821 - Tennessee |
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| Generation 4 - Elizabeth "Betsy" Webb: Died - - Cocke County, Tennessee |
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| Generation 4 - Russel Jenkins: Born - Abt 1819 - Tennessee |
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| Generation 4 - Lurena Rose: Born - Abt 1812 - South Carolina |
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| Generation 4 - Leonard Blackburn Cogdill: Born - 28 Nov 1833 - North Carolina |
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| Generation 4 - Leonard Blackburn Cogdill: Buried - - Cogdill Cemetery, Sevier County, Tennessee |
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| Generation 4 - Leonard Blackburn Cogdill & Nancy Jane Fleming: Married - 4 Oct 1854 - Madison County, North Carolina |
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| Generation 4 - Nancy Jane Fleming: Born - 27 Jul 1838 - North Carolina |
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| Generation 4 - Nancy Jane Fleming: Buried - - Cogdill Cemetery, Sevier County, Tennessee |
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| Generation 4 - Napoleon B. "Nip" Lyle: Born - Abt 1837 - Tennessee |
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| Generation 4 - Napoleon B. "Nip" Lyle & Francis "Fanny" Langston: Married - 5 Oct 1857 - Sevier County, Tennessee |
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| Generation 4 - Francis "Fanny" Langston: Born - 18 Jan 1840 - Tennessee |
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| Generation 4 - Francis "Fanny" Langston: Died - 25 May 1909 - Sevier County, Tennessee |
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| Generation 4 - Francis "Fanny" Langston: Buried - - Williamsburg Cemetery, Sevier County, Tennessee |
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