Johannes married Smand Klaasje on 3 Mar 1906 in Hoogeveen. Klaasje (daughter of Smand Albert and Booij Trijntje) was born on 9 Feb 1884 in Hollandseveld; died on 3 Aug 1980; was buried in Hoogeveen. [Group Sheet]

1. Okken Janna Roelina was born on 4 Nov 1906 in Krakeel, Hoogeveen; died on 25 Feb 1989; was buried in Hoogeveen.
2. Okken Trijntje was born on 26 Apr 1909 in Tiendeveen.
3. Okken Jan was born on 3 Jan 1911 in Tiendeveen; died on 17 Sep 1982 in Hoogeveen.
4. Okken Hillegonda was born in May 1913 in Beilen; died on 7 Aug 1913 in Beilen.
5. Okken Hillegonda was born on 16 May 1914 in Beilen.
6. Okken Albert was born on 22 Jan 1916 in Beilen.
7. Okken Jacob was born on 4 Feb 1918 in Beilen.
8. Okken Jannes was born on 23 Oct 1919 in Beilen; died on 21 Apr 1921 in Beilen.
9. Okken Hendrikje was born on 14 Jul 1921 in Beilen; died on 1 Aug 1995 in Hoogeveen.
10. Okken Margje was born on 12 Jun 1923 in Beilen; died in 12 Jan.
11. Okken Johannes was born on 10 Dec 1925 in Beilen.
12. Okken Klaasje was born on 21 Aug 1929 in Beilen.

Jan married Jonkman Janna on 29 Apr 1876 in Hoogeveen. Janna was born on 10 Jan 1856 in Ruinen; died on 23 Mar 1885 in Achterom, Hoogeveen. [Group Sheet]