Person:George Olmsted (2)

Name	George Olmsted
Gender	Male
Birth^[1]^[2]	27 Dec 1785	Enfield, Hartford, Connecticut, United States
Marriage	Mar 1809	Enfield, Hartford, Connecticut, United Statesto Sylvia Russell
Death^[2]^[3]^[4]	9 Aug 1824	Enfield, Hartford, Connecticut, United States

References

↑ Abbe, Cleveland, and Josephine Genung Nichols. Abbe-Abbey genealogy : in memory of John Abbe and his descendants. (New Haven, Connecticut: Tuttle Morehouse & Taylor Co, 1916)
106.

Children [of Simeon Olmsted and Roxalenah Abbe], born in Enfield.
... George Olmsted, b. Dec. 27, 1785 ; d. in Enfield, Aug. 9 or 11, 1824, aged 38. Married Sylvia _____.
↑ ^2.0 ^2.1 475, in Olmsted, Henry King (1824-1896), and George Kemp Ward (1848-1937). Genealogy of the Olmsted Family in America: Embracing the Descendants of James and Richard Olmstead and Covering a Period of Nearly Three Centuries, 1632-1912. (New York: A. T. DeLaMare, 1912)
57 .

(475) GEORGE OLMSTED, b. at Enfield, Conn., Dec. 27, 1786; d. Aug. 9, 1824; m. Mar., 1809, Sylvia Russell; ...
↑ George Olmsted, in Connecticut, United States. Connecticut Deaths and Burials, 1650-1934. (FamilySearch Record Search).

died 9 Aug 1824 in Connecticut, aged 38
↑ George Olmsted, in Find A Grave.

The photo of the gravestone shows that it is very worn and hard to read. The index uses a death date of 9 Aug 1824 - whether from the stone or from other records is not indicated.
If his age at death is accurate, he was born Dec 1785, not Dec 1786. Also, Dec 1785 is about halfway between the births of his siblings.