Wilhelm married Katharina Knocke on 16 Nov 1843 in Lancaster, Erie County, New York, USA. Katharina was born on 13 Sep 1824 in Deutschland; died on 16 Feb 1845 in Lancaster, Erie County, New York, USA. [Group Sheet] [Family Chart]

Wilhelm married Sophia Muck on 17 Mar 1848 in Lancaster, Erie County, New York, USA. Sophia (daughter of Johannes Muck and Fredericka Windesheim) was born on 27 May 1829 in Bas-Rhin, Alsace, France; died on 20 Feb 1902 in Michigan, USA. [Group Sheet] [Family Chart]

1. Elizabeth Helwig was born in 1846; died on 13 Jan 1933.
2. Henry Helwig was born in 1852; died on 1 Mar 1916.
3. Christian Helwig was born on 22 Mar 1856 in Erie County, New York, USA; died in 1887.
4. Magdalene Helwig was born on 23 Jun 1858 in Erie County, New York, USA; died on 6 Apr 1932 in Michigan, USA.
5. Jacob Helwig was born in 1867.
6. Samuel Helwig was born in 0Sep 1869; died on 7 Mar 1927.
7. William Helwig was born in 1872; died in 1949.