Ilona was born on 18 MAY 1964 in Utrecht, the daughter of Joop Jongerius and Beb.
Her husband was Jebbe de Graaf, who she married on 15 AUG 1986 in Utrecht. Their two known children were Tessa de (1992-) and Ivana de (1999-).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | 18 MAY 1964 |
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