Isaac W. Roberts was born in 1838.
In 1860 there was one Isaac R. Roberts living in Duplain, Clinton County, Michigan and one Isaac W. Roberts living in Walton, Eaton County.
Isaac was 23 years old and possibly living in Kent County, Michigan, when he enlisted in Company F on May 13, 1861.
He was killed in action May 31, 1862, at Fair Oaks, Virginia, and presumably among the unknown soldiers buried at Seven Pines National Cemetery.
In 1890 his father applied for a pension (no. 486111), but the certificate was never granted.