Casper Miller was born in Switzerland October 5, 1832. He came to the United States in 1854 and became a naturalized citizen. He married Mary A. Diehr March 4, 1858. Mary was born in Germany January 6, 1839. She was the daughter of John and Mary Diehr, also of Ballville Twp. Casper and Mary Miller were the parents of Louis, Willie, John Henry, and Rosie.
Casper died in Ballville Twp. Sandusky County September 13, 1910. Mary Diehr Miller died in Ballville Twp. February 6, 1917. Both are buried in the McGormley Cemetery.
A single individual by the name of Casper Miller appears on a list of Civil War draftees for Sandusky County. The document is part of the Local History Collection at the Rutherford B. Hayes Presidential Center. Casper Miller is believed to have enlisted as a private in Company C of the 72nd Ohio Volunteer Infantry raised largely in Sandusky County, Ohio.