Jacob married Elizabeth Sible on 17 Sep 1874. Elizabeth (daughter of Friedrich Seibel Sible and Susannah Barkley) was born on 3 Mar 1848 in Donegal Township, Westmoreland County, Pennsylvania, USA; died in 1920 in Elkhart, Morton County, Kansas, USA. [Group Sheet] [Family Chart]

1. John Clarence Poorman was born on 25 Jun 1875 in Tuscarawas Township, Stark County, Ohio, USA; died in 1923 in Kansas, USA; was buried in Arlington Cemetery, Arlington, Reno County, Kansas, USA.
2. Frederick Barkley Poorman was born on 2 Feb 1879 in Hutchinson, Reno County, Kansas, USA; died on 5 May 1953 in Kansas, USA.
3. Charles Emmett Poorman was born on 7 Nov 1881 in Hutchinson, Reno County, Kansas, USA; died on 12 Mar 1953 in Kansas, USA.
4. Marion Sible Poorman was born on 10 Dec 1885 in Hutchinson, Reno County, Kansas, USA; died on 5 Apr 1942 in St. Helens, Columbia County, Oregon, USA; was buried in Bethany Memorial Cemetery, Warren, Columbia County, Oregon, USA.