Family: Friedrich Preiss & Louisa
 | Friedrich Preiss (1826-1899) |
 | Louisa (1847- ) |
| Helen Preiss (1863- ) |
| Gustav Preiss (1865- ) |
| Anna Preiss (1868- ) |
| Henry Preiss (1874- ) |
| Ernst Preiss (1876- ) |
| Louis Preiss (1878-1919)  |
| Benjamin Preiss (1880- ) |
| Friedrich Preiss (1826-1899) |
| Louisa (1847- ) |
| Helen Preiss (1863- ) |
| Gustav Preiss (1865- ) |
| Anna Preiss (1868- ) |
| Henry Preiss (1874- ) |
| Ernst Preiss (1876- ) |
| Louis Preiss (1878-1919) |
| Benjamin Preiss (1880- ) |