Friedrich married Louise Charlotte Henriette Luecke Lücke on 6 Mar 1859 in Crete, Will, Illinois, USA. Louise (daughter of Friedrich Gottlieb Luecke Lücke and Sophie Henriette Elisabeth Meyer) was born on 18 May 1841 in Segelhorst, Niedersachsen, Germany; died on 21 Jul 1884 in Woodworth, Iroquis, Illinois, USA. [Group Sheet] [Family Chart]

1. Carl August - August - Luhmann was born on 23 Feb 1860 in Crete, Will, Illinois, USA; died on 16 Feb 1924 in Martin County, Minnesota, USA.
2. Emma Luhman was born about 1863 in Crete, Will, Illinois, USA.
3. Caroline - Lena - Luhman was born about 1865 in Illinois, USA; died after 25 Nov 1947.
4. Sophia Luhman was born about 1867 in Illinois, USA; died before 17 Sep 1946.
5. Heinrich Carl - Henry - Luhman was born on 12 May 1868 in Beecher, Will, Illinois, USA; died on 15 Sep 1946 in Gilman, Iroquois, Illinois, USA.
6. Fred H Luhman was born on 15 Apr 1870 in Illinois, USA; died on 10 Nov 1953 in Truman, Martin, Minnesota, USA.
7. William Luhmann was born on 17 Dec 1873 in Illinois, USA; died on 19 Dec 1959 in Sunset Rest Home, Fairmont, Minnesota, USA.
8. Louise Luhman was born on 25 Nov 1875 in Grant Park, Will, Illinois, USA; died on 7 Aug 1947 in St.James Hospital, Chicago, Cook, Illinois, USA.