| Male PROEFROCK, Johann Friedrich |
| Birth | 10 Sep 1844 | Niagara County, NY |
| Death | 27 Mar 1912 | Saint Paul, Ramsey County, MN |
| Burial | ||
| Other Spouse | Anna M | F72066 | |
| Marriage | ||
| Father | PROEFROCK, Johann | F20053 Group Sheet | |
| Mother | VOELKER, Christine | F20053 Group Sheet | |