Tofterå Slettemoen genealogy
Family: Nico de Groot / Alida Theodora Catharina Pennings (F6214)
 | Adrianus Antonius Pennings (1906-1974) |
 | Catharina Engelbertha van den Burg (1916-1983) 
|
| Adrianus Matheus Pennings (1940-2021)  |
| Adriana Johanna Maria Pennings (1941-2005) |
| Geertruida Cornelia Maria Pennings (1942-2017) |
| Martinus Jacobus Pennings (1944-2012) |
| Huberta Quirina Maria Pennings (1945-2021) |
| Petronella Alida Pennings (1948-2010) |
| Nico de Groot (1947-1986) |