Individual Details
Living
( - )
Families
| Spouse | Living |
| Father | Giovanni d'Onza (1871 - ) |
| Mother | Rosa Antonia Ferro (1880 - ) |
| Sibling | Michele Donato d'Onza (1899 - 1900) |
| Sibling | Maria d'Onza (1901 - ) |
| Sibling | Michele d'Onza (1904 - ) |
| Sibling | Francesca d'Onza (1907 - ) |
| Sibling | Marcello d'Onza (1912 - ) |
| Sibling | Giuseppe d'Onza (1914 - ) |
| Sibling | Giustina d'Onza (1916 - ) |
| Sibling | Gaetana d'Onza (1919 - ) |