August Theodor Koerner was born in
Bad Rodach,
Saxe-Coburg and Gotha, as the son of shoemaker Georg Koerner and his wife Dorothea née Siegmund. He emigrated to the
United States in 1857 and settled in
Vernon, Indiana, working in a mill. During the
American Civil War, Koerner served in the
6th Indiana Infantry Regiment. ==Notes==