| Name | Role | Place | Source | |
|---|---|---|---|---|
| Isabelle Marie Lea Steffens | Deceased | 2004 | Vallauris | Civil registration deaths |
| Isabelle Marie Lea Steffens | Deceased | 2004 | Vallauris | Civil registration deaths |
| Isabelle Steffens | Mother | 1877 | Mechelen | Civil registration births |
| Isabelle Steffens | Bride | 1877 | Mechelen | Civil registration marriages |
| Isabelle Steffens | Mother | 1880 | Mechelen | Civil registration deaths |
| Isabelle Steffens | Mother | 1879 | Mechelen | Civil registration births |
| Isabelle Steffens | Child | 1880 | Mechelen | Civil registration births |
| Isabelle Steffens | Child | 1858 | Mechelen | Civil registration births |
| Marie Isabelle Steffens | Registered | Brussel | Alien files |
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