He married Eleanor Oelschlager. He then went on to have a son named William Henry Eugene Schmalz. His son was an architect and designed the first city hall for the city of Kitchener.
Career
He was one of the foremost Canadian philatelists of his time, owning 45,000 stamps. Schmalz was also a singer in a number of choirs and played cornet in the Berlin orchestra. He died in 1933 and was buried at Mount Hope Cemetery in Kitchener.