| Gertrude Jonker  (I07072) 
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|   Events of close relatives | |
| Birth | 1909   Michigan | 
| Birth of a sibling | 22 August 1911 (Age 2) Brother: Willis Jonker  (I07073) | 
| Birth of a sibling | 1914 (Age 5) Brother: Jacob Jonker  (I07074) | 
| Birth of a sibling | 1916 (Age 7) Brother: Daniel Jonker  (I07075) | 
| Occupation | 1930 (Age 21) Creamery Source: 1930 United States Federal Census | 
| Death of a sibling | 4 September 1978 (Age 69) Brother: Willis Jonker  (I07073)  (Age 67) | 
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