I am also looking for the parents of Fred Kruger born in Germany in 1852, died 1935. Fred is my great grandfather. His daughter Viola Kruger was my grandmother. I have searched and searched for him and his parents, have looked in the 1860 and 1870 census. No luck. His brother was August was residing in Madison Minn. when Fred died. Have you been able to find anything on Fred since posting this?