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Father: Steven Davelaar
Born: 1917, Netherlands
Marr: 1941
Died: 1985, Netherlands
Mother: Johanna de Gier
Born: 1921, Netherlands
Died: 2013, Netherlands
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 | Roelof Jonker 
Born: Living -
Marr: -
Died: -
Other Spouses:
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 | Johanna Davelaar 
Born: Living -
Died: -
Other Spouses:
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 | 1. Annemarie Jonker Born: Living - Marr: Living - John N.N. (other spouses) Died: - |  | 2. Susan Christina Jonker Born: Living - Marr: Living - Ed N.N. Died: - |  |
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 | 3. Hendrik Roeland Jonker Born: Living - Marr: - Died: - |  | 4. Antoinetta Frederike Jonker Born: Living - Marr: Living - Jan ten Hove Died: - |  |
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