Casper Johannes (1897-1997) married in 1921 in Rotterdam with Margaretha Johanna (1900-1982), their children are:

- Maria Catharina (1921);
- Antonia Johanna (1924-1997);
- Casper Johannes (1926-2004).

Casper Johannes (1926-2004) married in Schiedam (1948) with Maria Antoni Kooyman (1925), their children are:

- Margriet Dorothea (1949);
- Casper Johannes (1959).

Casper Johannes Spermon (1959) married in Schiedam (1985) with Patricia Vos (1961), the have a child:

- Martijn (1992).