Sugulus (2 sugulussuhet)
Adrianus Johannes Juffermans on
Joseph Jacobus Juffermans vend.
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Muidugi,
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Theodorus Juffermans
(1 sugulussuhe)
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Clazina Maria Bellekom
(1 sugulussuhe)
on samal ajal
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Joseph Jacobus Juffermans vanemad
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Adrianus Johannes Juffermans vanemad