Johann married VOELKER, Christine on 22 Apr 1838 in Bergholz, Mecklenburg-Vorpommern, Germany. Christine was born about 1815 in Bergholz, Mecklenburg-Vorpommern, Germany; died on 24 Jul 1855 in Town of Wheatfield, Niagara County, NY. [Group Sheet] [Family Chart]

1. PROEFROCK, Frederike Christine was born on 8 Aug 1838 in Bergholz, Mecklenburg-Vorpommern, Germany; died on 27 Jun 1919 in WI.
2. PROEFROCK, Mary was born in 1840 in Prussia; and died.
3. PROEFROCK, Christine Louise was born on 25 May 1842 in Bergholz, Mecklenburg-Vorpommern, Germany; died in 1843 in Atlantic Ocean.
4. PROEFROCK, Johann Friedrich was born on 10 Sep 1844 in Niagara County, NY; died on 27 Mar 1912 in Saint Paul, Ramsey County, MN.
5. PROEFROCK, Maria Helene was born on 9 Aug 1848 in Town of Wheatfield, Niagara County, NY; and died.
6. PROEFROCK, Martha Elisabeth was born on 21 Dec 1850 in Town of Wheatfield, Niagara County, NY; died on 15 Sep 1904 in Constantia, Oswego County, NY.
7. PROEFROCK, Christian Friedrich was born on 28 Mar 1853 in Niagara County, NY; died on 8 Jul 1935 in North Tonawanda, Niagara County, NY.
8. PROEFROCK, Christine was born on 24 Jul 1855 in Town of Wheatfield, Niagara County, NY; died on 24 Jul 1855 in Town of Wheatfield, Niagara County, NY.

Johann married DUBOIS, Christine on 18 Jun 1856 in Town of Wheatfield, Niagara County, NY. Christine (daughter of DUBOIS, Jacob and SCHULTZ, Dorothea) was born in 1818 in Prussia; and died. [Group Sheet] [Family Chart]

1. PROEFROCK, August Heinrich was born on 1 Dec 1860 in Town of Wheatfield, Niagara County, NY; died on 12 Jun 1937 in North Tonawanda, Niagara County, NY.
2. PROEFROCK, Auguste Wilhelmine was born on 19 Sep 1862 in Town of Wheatfield, Niagara County, NY; died on 18 Jul 1939 in Town of Wheatfield, Niagara County, NY.