Johannes married Haske de Vries on 10 July 1870 in Groningen, Groningen, Nederland. Haske was born on 31 May 1845 in Groningen, Groningen, Nederland; died in Date unknown. [Group Sheet] [Family Chart]

1. Willem Ottenhoff was born on 26 November 1871 in Onstwedde, Groningen, Nederland; died on 18 July 1941 in Termunten, Groningen, Nederland.
2. Rintje Ottenhoff was born on 12 February 1874 in Ellersinghuizen, Vlagtwedde, Groningen, Nederland; died on 25 November 1953 in Groningen, Groningen, Nederland.
3. Elizabeth Ottenhoff was born in 1876 in Onstwedde, Groningen, Nederland; died in Date unknown.
4. Johannes Godefridus Ottenhoff was born on 13 February 1877 in Ellersinghuizen, Vlagtwedde, Groningen, Nederland; died on 12 March 1937 in Groningen, Groningen, Nederland.
5. Filippus Helenus Ottenhoff was born in 1882 in Vlagtwedde, Groningen, Nederland; died on 26 January 1910 in Groningen, Groningen, Nederland.