Jacques Clamorgan
Adventurer and American landowner from the West Indies (died 1814)
About Jacques Clamorgan
Jacques Phillippe Clamorgan (d. 1814) was an adventurer, fur trader and land owner in the United States.
Life Claymorgan was born around 1730 in the West Indies. By 1780, he was a known associate of Thompson and Company of Kingston, Jamaica, possibly working in the Caribbean slave trade, and Marmillion and Company of New Orleans.
In 1781, Clamorgan arrived in St. Louis, then under Spanish regime, and laid claim to more than 1 million acres of Upper Louisiana land, granted by the Spanish authorities.
Following the Louisiana Purchase, the US offered $8 million in response to Clamorgan's Spanish titles of property, however Clamorgan refused to accept the money. Due to Clamorgan's power in the region he was given a seat in the Court of Quarter Sessions, a governmental body that existed for St. Louis composed of Judicial, Executive and Legislative powers.
Clamorgan was not married, but known to live with enslaved women of color, fathering four mixed children by three women. He established freedom for his children before his death. In a tax-evasion effort, Clamorgan set Ester, his enslaved concubine, free in order to give her some of his land holdings. Ester then sued Clamorgan for rightful ownership of this land, and won through a series of lawsuits. She became one of the richest African-American people in St. Louis.
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Frequently asked questions
Who was Jacques Clamorgan?
adventurer and American landowner from the West Indies (died 1814)
Sources & further reading
· Wikipedia: Jacques Clamorgan
Cite this page
APA: Biography.guide. (2026). Jacques Clamorgan. https://biography.guide/jacques-clamorgan/
MLA: "Jacques Clamorgan." Biography.guide, https://biography.guide/jacques-clamorgan/.
Chicago: "Jacques Clamorgan." Biography.guide. https://biography.guide/jacques-clamorgan/.
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