My great-great-grandfather Frederick Exman came from Germany around 1872. He settled in Miami County, Ohio. His first wife was Mary Hacker (1872-1891), daughter of Henry (Johann Heinrich Christian) and Elizabeth Hacker. They had no children before she died. His second wife was Anna Retta Oda (1868-1938), daughter of John Oda and Sophia Maria Hacker. (Mary and Anna were first cousins.)
I do not have the names of Frederick's parents. If anyone can help me with information, it would be appreciated. Thank you.