1842 - 1844 (2 years)
| Name | Johann Franz Koch | |
| Birth | 23 Jun 1842 | |
| Gender | Male | |
| Death | 27 Nov 1844 | |
| Father | 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) | |
| Mother | Anna Christina Lucking, b. 21 Feb 1810 d. 13 Mar 1848 (Age 38 years) | |
| Marriage | 6 May 1832 | |
