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Johann Theodor Extra
- ☼ 15-07-1872 (Dortmund (DL)
- ✞ 07-03-1951 (Heerlen (L)
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Leonard Spijkers
- ☼ --1850 (Nuth (L)
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Maria Philomena Kan van
- ☼ --1850 (Nuth (L)
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Anna Mechtildis Spijkers
- ☼ 12-02-1878 (Nuth (L)
- ✞ 19-02-1955 (Maastricht (L)
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Johanna Extra
- ☼ 14-01-1903 (Geleen (L)
- ✞ 26-06-1989 (Geleen (L)