Nachkommen (nur männliche Linie): Gerard Maessen
Generation 1
1 Gerard Maessen, * 1763 Maasniel, , Limburg, Nederland, † 1838 Maasniel, , Limburg, Nederland, ∞ 1800 Walbught, , , Duitsland Marie Cathrine Wolters, * 1780 , † 1805 Maasniel, , Limburg, Nederland, ∞ 1809 Maasniel, , Limburg, Nederland Marie Cox, * 1780 Maasniel, , Limburg, Nederland, † 1854 Maasniel, , Limburg, Nederland, ∞ .
Kinder von Gerard Maessen & Marie Cathrine Wolters:- Willem (Guilaume) Maessen, * 1801 Maasniel, , Limburg, Nederland (Siehe 2).
- Henri Hubert Maessen, * 1804 Maasniel, , Limburg, Nederland, † 1804 Maasniel, , Limburg, Nederland.
- Gertrude Maessen, † 1807 Maasniel, , Limburg, Nederland.
- Marie Gertrude Maessen, * 1810 Maasniel, , Limburg, Nederland, † 1876 Maasniel, , Limburg, Nederland.
- Jean Hubert Maessen, * 1812 Maasniel, , Limburg, Nederland, † 1814 Maasniel, , Limburg, Nederland.
- Henrij Hubert Maessen, * 1814 Maasniel, , Limburg, Nederland, † 1886 Maasniel, , Limburg, Nederland.
- Marie Catharina Maessen, * 1816 Maasniel, , Limburg, Nederland, † 1860 Maasniel, , Limburg, Nederland.
- Jeanne Maessen, * 1819 Maasniel, , Limburg, Nederland.
- Franciscus Hubertus Maessen, * 1821 Maasniel, , Limburg, Nederland, † 1860 Maasniel, , Limburg, Nederland.
Generation 2
2 Willem (Guilaume) Maessen, * 1801 Maasniel, , Limburg, Nederland (Eltern: Siehe 1), ∞ 1826 Maasniel, , Limburg, Nederland Elisabeth Schonhoven, † 1832 Maasniel, , Limburg, Nederland, ∞ Anna Maria van Lier, * 1809 Nunhem, , , .
Kinder von Willem (Guilaume) Maessen & Elisabeth Schonhoven:- Johannes Hubertus Maessen, * 1827 Maasniel, , Limburg, Nederland.
- Gerardus Hubertus Maessen, * 1829 Maasniel, , Limburg, Nederland.
- Kasper Hubertus Maessen, * 1831 Maasniel, , Limburg, Nederland, † 1833 Maasniel, , Limburg, Nederland.
- Margaritha (Maria Catharina) Maessen, * 1832 Maasniel, , Limburg, Nederland, † 1832 Maasniel, , Limburg, Nederland.