The following data is extracted from Biographies of Croydon, Sullivan County, New Hampshire.
WILLIAM POWERS, an elder brother of the preceding, was born in 1786, and his means of education were similar to those of his brother. He was assistant keeper of the prison at Auburn, N. Y. Having drawn a superior plan of a prison, he was employed by the government of Canada West to superintend the erection of a penitentiary at Kingston, and in May, 1835, was appointed Deputy Warden of said prison. He is now an extensive farmer in western New York.
Source: Biographies of Croydon, Sullivan County, New Hampshire