Johannes married Christina Elisabetha Amann in 1862 in Odessa, Ukrayina. Christina (daughter of Heinrich Amann and Frederika Weis) was born on 4 Jan 1842 in Bergdorf, Odessa, Ukrayina; died in 1881 in Bergdorf, Odessa, Ukrayina. [Group Sheet] [Family Chart]

1. Scholastika Heck was born on 18 Oct 1866 in Speyer, Odessa, Ukrayina; died on 9 Aug 1921 in Mandan, Morton County, North Dakota, USA; was buried in UNKNOWN.

Johannes married Rosa Harmon in 1882 in Odessa, Ukrayina. Rosa was born in 1850 in Odessa, Ukrayina; died on 30 Nov 1929 in North Dakota, USA; was buried in UNKNOWN. [Group Sheet] [Family Chart]

1. Friedrich Johann Heck was born on 11 Aug 1883 in Speyer, Odessa, Ukrayina.
2. Rosa Anna Heck was born on 1 Jul 1885 in Speyer, Odessa, Ukrayina.
3. Katharina Heck was born on 20 Jun 1887 in Speyer, Odessa, Ukrayina.
4. Anton Heck was born on 16 Apr 1891 in Odessa, Ukrayina.