Jan married Froukje Sijtzes van der Hoek on 05 May 1823 in Achtkarspelen, Friesland, Nederland. Froukje (daughter of Sytze Jacobs van der Hoek and Stijntje Pieters Hoekstra) was born on 16 September 1795 in Surhuisterveen, Achtkarspelen, Friesland, Nederland; was christened on 18 October 1795 in Surhuisterveen, Achtkarspelen, Friesland, Nederland; died on 06 June 1873 in Achtkarspelen, Friesland, Nederland. [Group Sheet] [Family Chart]

1. Bauke Jans Houtsma was born on 11 August 1824 in Achtkarspelen, Friesland, Nederland; died on 23 December 1877 in Achtkarspelen, Friesland, Nederland.
2. Sytze Jans Houtsma was born on 13 December 1826 in Achtkarspelen, Friesland, Nederland; died on 28 November 1906 in Achtkarspelen, Friesland, Nederland.
3. Harm Jans Houtsma was born on 26 December 1829 in Achtkarspelen, Friesland, Nederland; died on 15 April 1907 in Achtkarspelen, Friesland, Nederland.
4. Pieter Jans Houtsma was born on 11 October 1833 in Achtkarspelen, Friesland, Nederland; died on 30 September 1834 in Achtkarspelen, Friesland, Nederland.
5. Antje Jans Houtsma was born on 20 December 1835 in Achtkarspelen, Friesland, Nederland; died on 14 February 1922 in Achtkarspelen, Friesland, Nederland.