John Elbert Coon is the son of Jacob B. Coon and Mary Newcomb.
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About 1856, John married Adaline Susan Everett/Evoritt, the daughter of Thomas Evoritt and Margaret Dunlap.

Per the 1860 U.S. Census, John and Adaline Coon resided in Washington Township, Mercer County, Missouri. John is listed as 24 years old and born in Ohio. Adaline is listed as 22 years old and born in Ohio. Also listed are 2 children, both born in Missouri:
-A L, age 3, Male
-A A, age 1, Female

Per the 1870 U.S. Census, John and Adaline resided in Washington Township, Mercer County, Missouri. Listed are:
-John C Coon, age 34, born Ohio
-Adaline Coon, age 32, born Ohio
-Amos L Coon, age 13, born Missouri
-Arvazana Coon, age 11, born Missouri
-Hettie C Coon, age 10, born Missouri
-Charles Coon, age 7, born Missouri
-Martha Coon, age 7, born Missouri
-Thomas Coon, age 4, born Missouri
-Jacob Coon, age 2, born Missouri
-Margaret Evoritt*, age 72, born Virginia

*NOTE: Margaret Evoritt is Adaline's mother
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Per the 1880 U.S. Census, John and Adaline resided in Washington Township, Mercer County, Missouri. Listed are:
-John E. Coon, age 44, born Ohio
-Adaline Coon, age 42, born Ohio
-Charles M. Coon, age 17, born Missouri
-Marthey F. Coon, age 17, born Missouri
-Thomas P. Coon, age 14, born Missouri
-Jacob H. Coon, age 11, born Missouri
-Joseph M. Coon, age 9, born Missouri
-Morris W. Coon, age 6, born Missouri
-Adela S. Coon, age 1, born Missouri
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Per the 1900 U.S. Census, John and Adaline resided in Washington Township, Mercer County, Missouri. Listed are:
-John E Coon, age 64, born Mar 1836 Ohio
-Adaline Coon, age 62, born Apr 1838 Ohio

In 1900, John and Adaline are listed as married for 44 years. Adaline is listed with 10 children born and 9 children living.
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John and Adaline are known to have 10 children:
•Amos Lyford Coon (1857–1931)
•Arvaxenia A. Coon Smith (1858–1940)
•Harriet Cargie "Hettie" Coon Shockey (Abt 1860-Aft 1900)
•Charles Marion Coon (1862-1895)
•Martha Frances Coon Logan (1863–1957)
•Thomas P. Coon (1866–1932)
•Jacob Henry "Jake" Coon (1868–1941)
•Joseph M. Coon (1870–1957)
•Morris Waldo Coon (1873–1965)
•Adaline Susan Coon Travis (1878–1960)