Heikki married 7.2 Marja Inkeri Suominen os. Tikka. 7.2 (daughter of 7. Yrjö Aleksanteri Tikka and Martta Kirsti Inkeri Tikka os. Wennström) was born on 22 Apr 1926; died on 24 Jan 1997. [Group Sheet]

1. 7.2.5 Riikka Elisa Nieminen os. Suominen was born on 10 Aug 1956; died on 22 Dec 1988.
2. Private
3. Private
4. Private
5. Private