Oskar married Lucy Elizabeth Heckman on 9 Jul 1897 in Manhattan, New York City, New York, USA. Lucy (daughter of Peter Heckmann Heckman and Apollonia Kunz) was born on 20 Nov 1875 in Brooklyn, Kings County, New York, USA; was christened on 5 Dec 1875 in Most Holy Trinity Catholic Church, Brooklyn, Kings County, New York, USA; died on 26 Nov 1953 in Ridgefield Park, Bergen County, New Jersey, USA; was buried on 30 Nov 1953 in St. Joseph's Cemetery, Hackensack, Bergen County, New Jersey, USA. [Group Sheet] [Family Chart]

1. Oscar Muller was born on 25 Apr 1898 in Jersey City, Hudson County, New Jersey, USA; died on 13 Nov 1986 in Wildwood, Cape May County, New Jersey, USA.
2. Harriet Ellen Muller was born on 20 Sep 1902 in New Jersey, USA; died on 9 Nov 1967 in New Jersey, USA.