 MaleJacob Jansen, Sr |
| Birth | 7 May 1905 | New York, United States  |
| Death | 31 Dec 1981 | Patchogue, Brookhaven, Suffolk, New York, United States |
| Burial | 1982 | Coram, Brookhaven, Suffolk, New York, United States |
| Marriage | 27 Oct 1923 | Manhattan, New York City, New York, United States |
| Father | Jacob W Jansen | F29536 Group Sheet | |
| Mother | Marie L. Bruns | F29536 Group Sheet | |
 FemaleAlexandria Piekart |
| Birth | 9 Jun 1904 | Rotterdam, South Holland, Netherlands |
| Death | 13 Mar 1952 | New York, United States |
| Burial | 1952 | Coram, Brookhaven, Suffolk, New York, United States |
| Father | Alexander Piekart | F29537 Group Sheet | |
| Mother | Johanna Cornelia Straatman | F29537 Group Sheet | |
| Male Jacob Jansen, Jr |
| Birth | 5 Sep 1924 | New York, New York |
| Death | 6 Apr 2005 | |
| Burial | ||
| Spouse | Arlene Joyce Rockwell, ^ | F3532 | |
| Marriage | ||
