Col. John Cox

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Col. John Cox's Geni Profile

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John Mickle Cox

Birthdate: (74)
Birthplace: East Caln Township, Chester, Pennsylvania
Death: December 14, 1849 (74)
Georgetown, Washington, District of Columbia, United States
Immediate Family:

Son of Lawrence Cox and Jane Cox
Husband of Jane Cox
Father of Elizabeth Threlkeld Underwood and Thomas Campbell Cox

Occupation: Mayor of Georgetown; importer, banker
Managed by: Erica Howton
Last Updated:
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Immediate Family

About Col. John Cox

John Cox (born 1775- died December 14, 1849).  Colonel, D.C. Militia, War of 1812. Mayor of Georgetown, D.C., 1823-1845.

An orphan, raised in Baltimore by an uncle, came to Georgetown by 1799 and opened a store.

  • Married Matilda Smith, sister of banker Clement Smith, in 1800.
  • Death of his first wife put him in the way of an equally advantageous second marriage to Jane Threlkeld, daughter of former mayor John Threlkeld. 

Cox was an importer and banker. He loaned money to Thomas L. McKenney, Superintendant of Indian Trade, to buy Weston, and McKenney bought exclusively from Cox for the Indian trade. Around 1822 Cox built his house, The Cedars, on 11 acres conveyed to him by his father-in-law (dowry?). 

  • 1830 Census: 16 person household, including 9 slaves.
  •  Cox’s father-in-law, John Threlkeld had been Mayor of Georgetown; Cox was mayor 1823-1845
  • John Cox unanimously re-elected Mayor for the ensuing year, by the Council of Georgetown. (National Intelligencer, January 7, 1824)


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Col. John Cox's Timeline

Chester, Pennsylvania
July 1, 1829
Age 54
December 14, 1849
Age 74
Washington, District of Columbia, United States