Thomas Donnelly (1764–1835) was Sergeant-at-Arms of the New York State Assembly from 1806 to 1813, and from 1814 to 1817.
At the outbreak of the revolution, his family was forced to move away from Manhattan because his father Peter was an outspoken well known patriot (Sons of Liberty).
At the age of 14, Thomas Donnelly fought in the American Revolutionary War as an express rider messenger for Washington.
Thomas Donnelly married Ruth Pettinger (1768–1838).
Their daughter Hester Donnelly married Ulysses F. Doubleday (1792–1866).