The Devantier Family Tree
Family: John Henry Voelker / Betty Jane Marqwardt (F2197)
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 | Johannes Henry (John) Voelker (1886-1966)
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 | Beata Amalie Agatha DeVantier (1890-1968)
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| Raymond Albert Voelker (1919-1997)
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| John Henry Voelker (1916- )
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 | Betty Jane Marqwardt (1921-1968)
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