Adam Coon is the son of Johann "John" Coon and Catherine Rhode. Based on the 1850 and 1860 US Census records, Adam was born in 1823 or 1824.

[Not to be confused with Adam Coon (1825-1896), son of Michael "Red Mike" Coon, and married Mrs. Elizabeth Farr/Farrar on 23 Jul 1863 in Coles County, IL]
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FAMILY NAME
As with many early families that settled in America, the spelling of surnames were varied. The original German spelling of Adam's family name is Göhn. It evolved into other variations, such as Coon, Koon, Goan, Kuhn, Kohn and Goon.

People wrote the name the way it was pronounced. Lloyd B. Gohn, author of the book "A Historical Sketch of the Gohn Family in Canada" writes on page 3 that "In Pennsylvania to this day the name "Gohn" is pronounced "Goon"". Census recorders and others wrote the name the way they understood it and sometimes the alternate spelling was carried on.

Adam's Great Grandfather, Johann "John" Göhn, arrived in America on September 19, 1738, on the ship Thistle and landed at Philadelphia from Rotterdam via Plymouth, England.
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In 1845, Adam married Eunice Goben, the daughter of James Goben and Abigail Reed.

Illinois Marriages, 1790-1860
-Bride: Eunice Goben
-Groom: Adam Coon, Jr.
-Marriage Date: 17 Jan 1845
-Marriage Place: Coles County, Illinois
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Per the 1850 U.S. Census, Adam and Eunice Coon resided in Charleston Precinct, Coles County, Illinois. Listed are:
-Adam Coon, age 27, born Ohio
-Eunice Coon, age 23, born Ohio
-Margaret Coon, age 4, born Illinois
-Sarah E Coon, age 2, born Illinois
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Per the 1860 U.S. Census, Adam and Eunice Coon resided in Hutton Township, Coles County, Illinois. Listed are:
-Adam Coon, age 36 born Ohio
-Eunice Coon, age 36 born Ohio
-Margaret Coon, age 15, born Illinois
-Sarah Coon, age 11, born Illinois
-Catherine Coon, age 9, born Illinois
-Anne Coon, age 5, born Illinois
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Adam and Eunice Coon are known to have 5 children:
• Margaret Coon (1845- ? )
• Sarah Elizabeth Coon (1849- ? )
• Catherine "Kate" Coon Owens Fish (1851-1935)
• Annetta "Anne" Coon Cook James Kelley Yost Woodall (1851-1923)
• Evan Coon (1862-1862)
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Per the 1880 US Census, 3 daughters of Adam and Eunice Coon are listed residing in the same household in Charleston, Coles County, Illinois at 123 South St.. Listed are:
-Sarah Coon, age 27, born Illinois
-Kate Owens, age 26, born Illinois, Sister
-Annie Cook, age 21, born Illinois, Sister
-Squire O. Cook, age 7/12 (Oct), born Illinois
-William Owen, age 3, born Illinois