Gerharda Wilhelmina "Grada" Willemsen 1869–1948 Augustinus Cornelius Johannes "Guus" Derksen 1872–1951 | | |
Wilhelmina Johanna Willemsen 1871–1871 | | |
Elisabeth Cornelia Willemsen 1872–1921 | | |
Hermanus Matthias Willemsen 1875–1876 | | |
Johannes Matthias Willemsen 1875–1880 | | |
| | Carolina Wilhelmina Wittich 1844–1902 Everhardus Matthias Willemsen 1843–1899 | | |
| | Jacomina Berendina Stokman – |