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Jan Mathijs Extra
- ☼ 23-12-1797 (Hoensbroek (L)
- ✞ 29-02-1860 (Hoensbroek (L)
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Maria Margaretha Jeuken
- ☼ 08-12-1792 (Maastricht (L)
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Jan Hendrik Extra
- ☼ 20-03-1834 (Hoensbroek (L)
- ✞ 28-10-1890 (Schinnen (L)
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Maria Catharina Hartmans
- ☼ 23-01-1830 (Nuth (L)
- ✞ 10-04-1875 (Schinnen (L)
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Louis Extra
- ☼ 05-11-1870 (Schinnen (L)
- ✞ 03-02-1933 (Hulsberg (L)