I am searching for my great-great-great grandparents, August & Fredericke Raddue of Delavan. August was born 3 August 1833 in Prussia, and died 29 September 1914 in Faribault County; Fredericke was born 20 May 1842 in Prussia and died 30 August 1911 in Faribault County. Both are buried in Bass Lake Cemetery in Winnebago.
August and Fredericke had two children, Clara (my great-great grandmother) and Abraham. Clara (1862-1944) married Julius Nimz (1862-1953) and had four children with him (Ernest, Hulda, Martha, and Lydia); she also had one daughter (Mary Raddue) whose father is unknown. I am descended from Ernest's son Everett.
Does anyone have any information about August and Fredericke's parents, immigration, or Fredericke's maiden name? Mainly I am interested in the maiden name and immigration, but parents would be very good as well. Thank you.