Thomas Armstrong's father, also named Thomas Armstrong, emigrated from Ireland in 1775.[1] The family initially settled near Stillwater, in Saratoga County, New York; however, sometime after the American Revolution, they were among the pioneer settlers of Wolcott (Wayne County, New York), where Armstrong was active in local government and politics.
In 1826, the Town of Butler was separated from Wolcott, and Armstrong was the first Supervisor of the town, in office from 1826 to 1833. He was again a member of the State Assembly (Wayne Co.) in 1827, 1828, and 1829; and Chairman of the Board of Supervisors of Wayne County in 1829, 1830, 1831, and 1833.
He was again Supervisor of the Town of Butler in 1838; a member of the State Assembly (Wayne Co.) in 1839; Town Supervisor in 1844, 1845, 1850 and 1851; and Chairman of the Board of Supervisors in 1844, 1850, and 1851.
He was buried at the Butler Center Cemetery in Butler.