Individual Details
Living
( - )
Families
| Father | Andrzej Letniowski (1887 - ) |
| Mother | Marianna Gancarz (1890 - 1920) |
| Sibling | Stanisław Letniowski (1912 - ) |
| Sibling | Katarzyna Anna Letniowska (1914 - 1914) |
| Sibling | Jan Andrzej Letniowski (1915 - ) |
( - )
| Father | Andrzej Letniowski (1887 - ) |
| Mother | Marianna Gancarz (1890 - 1920) |
| Sibling | Stanisław Letniowski (1912 - ) |
| Sibling | Katarzyna Anna Letniowska (1914 - 1914) |
| Sibling | Jan Andrzej Letniowski (1915 - ) |