Jakob married Willemke Gerrits Mary Wilhelmina Helena van Wijk on 6 Jan 1870 in Grand Rapids, Kent, Michigan, USA. Willemke (daughter of Gerrit Jannes van Wijk and Martjen Martje Wiebes Martha Maggie Feenstra) was born on 3 Jul 1853 in Akkrum, Utingeradeel, Friesland, Holland; died on 27 Apr 1938 in Allendale Township, Ottawa, Michigan, USA. [Group Sheet] [Family Chart]

1. Cornelius Wierda was born on 5 Jan 1872 in Saugutuck, Allegan, Michigan, USA; died on 4 Jul 1892 in Allendale, Ottawa, Michigan, USA.
2. Martha Wierda was born on 19 Feb 1874 in Singapore, Allendale Township, Ottawa, Michigan, USA; died on 19 Dec 1959 in Michigan, USA.
3. Maria Mary Wierda was born on 18 Apr 1876 in Saugutuck, Allegan, Michigan, USA; died in 1964 in Michigan, USA.
4. Jennie Wierda was born on 13 Aug 1880 in Tallmadge, Ottawa, Michigan, United States; died in 1981 in Michigan, USA.
5. George Wierda was born on 8 Jul 1883 in Allendale Township, Ottawa, Michigan, USA; died on 21 Apr 1966 in Wise River, Beaverhead, Montana, USA.
6. Maggie Wierda was born on 11 Jun 1886 in Allendale Township, Ottawa, Michigan, USA; died on 13 Jul 1980 in Michigan, USA.
7. Christine - Senie - Wierda was born on 21 Jun 1888 in Allendale Township, Ottawa, Michigan, USA; died on 22 Dec 1984 in Michigan, USA.

Cornelis married Marijke Hendriks Huizenga on 2 Jan 1844 in Westdongeradeel, Friesland, Netherlands. Marijke was born on 26 Oct 1819 in Blija, Ferwerderadeel, Friesland, Netherlands; died on 13 Nov 1864 in Ferwerderadeel, Friesland, Netherlands. [Group Sheet] [Family Chart]