| Parent | Name |
|---|---|
| Father | Jacobus "Jacob" Sr. Messmer |
| Mother | Margaretha Magelky |
| Father | Jacob Messmer |
| Mother | Margaretha Magelky |
| Son: | Joseph P. Fleck | Born: 1895 | |
| Son: | Raphael Fleck | Born: 1895 | |
| Daughter: | Rose Fleck | Born: 12 Nov 1897 | |
| Son: | John R. Fleck | Born: 27 Apr 1900 | |
| Son: | Jacob A. Fleck | ||
| Daughter: | Beatrice Fleck | ||
| Daughter: | Bernadine Fleck | ||
| Daughter: | Agnes Fleck | ||
| Daughter: | Ann Fleck |