Emanuel de Jong was a son of Hartog de Jong and Hanna Rijksman. He married 22 June 1910 in Amsterdam to Dina Deen, a daughter of Levie Josef Deen and Margaretha Zomerplaag. The couple had two children: Anna and Margaretha.
The marriage ended by a divorce on 10 June 1936.
City Archive of Amsterdam, archive card of Emanuel de Jong.