Granville was born on January 12, 1845 in Barry, Illinois. Granville was the son of Nathaniel Foy Hart and Clarissa Hill Hart. Granville married Mary S. Garrett on April 4, 1866. The family lived in Pike County, Illinois. Granville died on March 12, 1898. The couple had four daughters: Mary Bell, born 1867 and married John Tillman; Mattie married John Earley, Margaret, Josephine born 1872.
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