Hellegers-Hettema Family Tree

Interactive tree of Gertrude Koster

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Jacob Sonnema 1916–1988
Greta Ruth Nienhouse 1917–1993
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Harold Sonnema 1923–1984
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Shirley Ann Veenstra 1959–1959
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Gertrude Johanna Sonnema 1926–1999
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Jacob Sonnema 1889–1969
Akke Hettes Hettema 1894–1972
Gertrude Koster –
Jacob Sonnema –