Sondheim at a WEST SIDE STORY rehearsal.

Stephen's parents were Herbert S Sondheim, 1895-1966, and Etta Janet Fox, 1898-1992. He had half-siblings, Herbert B Sondheim Jr, 1943-1994, and Walter Sondheim (survived him). Stephen's father owned a dressmaking company and his mother (known as "Foxy") was a designer for the company. But when Stephen was 10, his father abandoned the family. In the 1940 federal census, mother "Janet" and Steven (sic) were living in NYC with a maid and a butler. Janet was married and not working, Steven was in school. On December 31, 2017, he married Jeffrey Scott Romley in Brooklyn NY, and Jeffrey survives him. You can scroll down to read a story from the New York Times about Mr. Sondheim.