Until he married late in life, Morris' diary tells of a series of affairs.
 His lovers included the French novelist Adelaide Filleul and the American poet and novelist Sarah Wentworth Apthorp Morton.

In 1809, at age 57, he married 35-year-old Ann Cary Randolph (1774–1837), nicknamed "Nancy", who was the daughter of Ann Cary and Thomas Mann Randolph Sr.,
and the sister of Thomas Mann Randolph Jr.  Thomas Mann Randolph Jr. was the husband of Thomas Jefferson's daughter, Martha Jefferson Randolph.
Nancy lived near Farmville, Virginia, with her sister Judith and Judith's husband Richard Randolph on a plantation called Bizarre.
 In April 1793, Richard Randolph and Nancy were accused of murdering a newborn baby which was said to be Nancy's; presumably she had been having an affair with Richard.
 Richard stood trial; he was defended by Patrick Henry and John Marshall, who obtained an acquittal.
 Richard Randolph died suddenly in 1796; both sisters were suspected, but nothing was proven.
 Nancy remained at Bizarre after her brother-in-law's death but was asked to leave by Judith in 1805.

Nancy traveled north and lived in Connecticut before agreeing in 1809 to work as a housekeeper for Morris, whom she had known previously.
 They soon decided to marry; Morris was apparently undisturbed by the rumors that had caused Nancy to leave Virginia.
 By all accounts, their marriage was a happy one; they had a son, Gouverneur Morris Jr., who went on to a long career as a railroad executive.

Morris died on November 6, 1816, after causing himself internal injuries and an infection while using a piece of whalebone as a catheter to attempt clearing a blockage in his urinary tract.
He died at the family estate, Morrisania, and was buried at St. Ann's Church in The Bronx.
Until he married late in life, Morris' diary tells of a series of affairs.  His lovers included the French novelist Adelaide Filleul and the American poet and novelist Sarah Wentworth Apthorp Morton.
In 1809, at age 57, he married 35-year-old Ann Cary Randolph (1774–1837), nicknamed "Nancy", who was the daughter of Ann Cary and Thomas Mann Randolph Sr., and the sister of Thomas Mann Randolph Jr.  Thomas Mann Randolph Jr. was the husband of Thomas Jefferson's daughter, Martha Jefferson Randolph. Nancy lived near Farmville, Virginia, with her sister Judith and Judith's husband Richard Randolph on a plantation called Bizarre.  In April 1793, Richard Randolph and Nancy were accused of murdering a newborn baby which was said to be Nancy's; presumably she had been having an affair with Richard.  Richard stood trial; he was defended by Patrick Henry and John Marshall, who obtained an acquittal.  Richard Randolph died suddenly in 1796; both sisters were suspected, but nothing was proven.  Nancy remained at Bizarre after her brother-in-law's death but was asked to leave by Judith in 1805.
Nancy traveled north and lived in Connecticut before agreeing in 1809 to work as a housekeeper for Morris, whom she had known previously.  They soon decided to marry; Morris was apparently undisturbed by the rumors that had caused Nancy to leave Virginia.  By all accounts, their marriage was a happy one; they had a son, Gouverneur Morris Jr., who went on to a long career as a railroad executive.
Morris died on November 6, 1816, after causing himself internal injuries and an infection while using a piece of whalebone as a catheter to attempt clearing a blockage in his urinary tract. He died at the family estate, Morrisania, and was buried at St. Ann's Church in The Bronx.
Gouverneur Morris