Individual Details
Living
( - )
Families
| Father | Antoni Siwak (1870 - ) |
| Mother | Maria Górniak (1878 - 1911) |
| Sibling | Roman Siwak (1890 - 1990) |
| Sibling | Tekla Siwak (1895 - 1969) |
| Sibling | Anna Katarzyna Siwak (1897 - 1898) |
| Sibling | Living |
| Sibling | Aniela Siwak (1907 - 1992) |
| Sibling | Living |