Jakob married Katherine Wanner on 14 Dec 1919 in Eureka, McPherson County, South Dakota, USA. Katherine (daughter of Karl Wanner and Elisabetha Diegel) was born on 28 Nov 1899 in South Dakota, USA; died on 12 Nov 1990 in Eureka, McPherson County, South Dakota, USA. [Group Sheet] [Family Chart]

1. Ella Pleines
2. Martha Pleines
3. Herbert Pleines was born on 23 Nov 1923; died on 15 Jul 2005 in Eureka, McPherson County, South Dakota, USA.
4. Harry Pleines was born on 20 Jul 1925 in Eureka, McPherson County, South Dakota, USA; died on 21 Feb 2008 in McMinnville, Yamhill County, Oregon, USA; was buried in Black Hills National Cemetery, Sturgis, Meade County, South Dakota, USA.
5. Julius Pleines was born on 7 May 1927; died on 9 Jul 2013 in Aberdeen, Brown County, South Dakota, USA; was buried on 13 Jul 2013 in Sunset Memorial Gardens, Fargo, Cass County, North Dakota, USA.
6. Raymond Pleines