Nicolaus married Katharina Ehrstein on 8 Sep 1861 in Belleville, St. Clair County, Illinois, USA. Katharina (daughter of Sebastian Ehrstein and Regina Senger) was born on 12 Jun 1839 in Birkenhördt, Pfalz, Bayern; was christened on 15 Jun 1839 in Birkenhördt, Pfalz, Bayern; died on 13 Feb 1920 in Belleville, St. Clair County, Illinois, USA; was buried in Green Mount Cemetery, Belleville, St. Clair County, Illinois, USA. [Group Sheet] [Family Chart]

1. Philipp C. Reeb was born on 2 Sep 1861 in Belleville, St. Clair County, Illinois, USA; died on 28 Feb 1916 in Belleville, St. Clair County, Illinois, USA; was buried on 29 Feb 1916 in Belleville, St. Clair County, Illinois, USA.
2. William P. Reeb was born on 28 Mar 1864 in Belleville, St. Clair County, Illinois, USA; died on 19 May 1919 in Belleville, St. Clair County, Illinois, USA; was buried in Green Mount Cemetery, Belleville, St. Clair County, Illinois, USA.
3. John Reeb was born in 1866 in Belleville, St. Clair County, Illinois, USA; died in 0Aug 1899 in Belleville, St. Clair County, Illinois, USA.
4. Peter Nicholas Reeb was born on 26 Mar 1869 in Belleville, St. Clair County, Illinois, USA; died on 8 Feb 1916 in Belleville, St. Clair County, Illinois, USA.
5. Jacob Reeb was born in 0Aug 1871 in Belleville, St. Clair County, Illinois, USA; died on 11 Apr 1916 in Belleville, St. Clair County, Illinois, USA.
6. Mary Eva Reeb was born on 29 Jan 1876 in Belleville, St. Clair County, Illinois, USA; was christened on 13 Feb 1876 in Belleville, St. Clair County, Illinois, USA; died on 31 Dec 1904 in Belleville, St. Clair County, Illinois, USA.
7. Adolph Reeb was born on 11 Feb 1881 in Belleville, St. Clair County, Illinois, USA; died on 8 Oct 1905 in Belleville, St. Clair County, Illinois, USA; was buried in Green Mount Cemetery, Belleville, St. Clair County, Illinois, USA.