Petrus Frederik [6 KB] (1887-1957) married in 1909 with Sara Muijzer (1890-1972) from Kralingen, their 5 children:

- Geertruida Henrica Maria (1911-1992);
- Petronella F. (1912-..);
- Hendrika Antonia [4 KB] (1916-1986) married [7 KB] with Rammerath and in 1964 in Cains Australia with Johannes Herman Röbken (1913-1991);
- Petrus [4 KB] (Piet) Frederik (1919-2001);
- Hendrik A. (1925-..).

Hendrik A. (1925) married in Hilversum in 1949 with Annie Hoogstraten, their children:

- Marianne (1952);
- Antonia (1954);
- Peter F. (1958).