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Jan Willem Extra
- ☼ 28-06-1790 (Hoensbroek (L)
- ✞ 25-11-1862 (Hoensbroek (L)
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Maria Barbara Engelen
- ☼ --1774 (Heerlen (L)
- ✞ 27-12-1849 (Hoensbroek (L)
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Jan Pieter Extra
- ☼ 27-03-1816 (Hoensbroek (L)
- ✞ 05-12-1895 (Hoensbroek (L)
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Jan Willem Corvers
- ☼ --1781
- ✞ 20-10-1847 (Hoensbroek (L)
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Anna Catharina Leenders
- ☼ --1779
- ✞ 14-03-1862 (Hoensbroek (L)
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Petronella Corvers
- ☼ 15-07-1827 (Hoensbroek (L)
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Jan Joseph Extra
- ☼ 20-03-1862 (Hoensbroek (L)
- ✞ 04-02-1926 (Sittard (L)
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Maria Elisabeth Ramakers
- ☼ --1864 (Nuth (L)
- ✞ 31-10-1920 (Hoensbroek (L)
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L.L. Jans Extra
- ☼ 12-12-1903 (Hoensbroek (L)
- ✞ 12-12-1903 (Hoensbroek (L)