Wilhelm Heinrich Conrad Koch, b. 9 Apr 1800, Alhausen, Kreis Höxter, Nordrhein-Westfalen, Germany d. 1881, Fond du Lac County, Wisconsin, USA (Age 80 years)
1. Clementine Wilhelmine Koch, b. 24 Aug 1827, Schmechten, Höxter, North Rhine-Westphalia, Germany d. 10 Mar 1889, Lamartine, Fond du Lac, Wisconsin, USA (Age 61 years)