| Male PROEFROCK, Johann Wilhelm Christian |
| Birth | 3 Feb 1879 | North Tonawanda, Niagara County, NY |
| Death | 9 Mar 1967 | Buffalo, Erie County, NY |
| Burial | ||
| Marriage | 6 Oct 1904 | Bergholtz, Town of Wheatfield, Niagara County, NY |
| Father | PROEFROCK, Christian Friedrich | F13829 Group Sheet | |
| Mother | SEEFELDT, Wilhelmine Therese | F13829 Group Sheet | |
| Female WILLIAMS, Agatha Albertine Auguste |
| Birth | 3 Dec 1881 | Town of Wheatfield, Niagara County, NY |
| Death | 4 May 1973 | Kenmore, Erie County, NY |
| Burial | ||
| Father | WILLIAMS, Ferdinand August | F17111 Group Sheet | |
| Mother | WALK, Eldice Lydia Magdalene | F17111 Group Sheet | |
| Female PROEFROCK, Frances Lydia Wilhelmine |
| Birth | 26 Sep 1906 | North Tonawanda, Niagara County, NY |
| Death | 4 Sep 2002 | Buffalo, Erie County, NY |
| Burial | ||
| Spouse | KAUFMANN, Carl P | F19420 | |
| Marriage | Abt 1929 | New York |
| Female PROEFROCK, Viola Agatha Helene |
| Birth | 24 Jun 1909 | Tonawanda, Erie County, NY |
| Death | 22 Jul 2002 | North Tonawanda, Niagara County, NY |
| Burial | ||
| Spouse | WEIN, Howard E | F19421 | |
| Marriage | Aft 1930 | |
| Female PROEFROCK, Vera L |
| Birth | Apr 1918 | Tonawanda, Erie County, NY |
| Death | 1955 | North Tonawanda, Niagara County, NY |
| Burial | ||
| Spouse | FISCHLE | F19422 | |
| Marriage | ||