Stevens was married to Elizabeth Langdon Wilks (–1930), who went by Eliza. She was the sister of
Matthew Astor Wilks and, through her mother, the great-granddaughter of America's first
millionaire John Jacob Astor. Among her first cousins were
DeLancey Astor Kane,
Woodbury Kane,
S. Nicholson Kane, and
John Jacob Astor IV. Her father, Matthew Wilks, was born in London and was the son of a reverend. In 1908, Stevens purchased property at 11
East 78th Street, not far from the
Stuyvesant Fish mansion at the corner of 78th and
Madison Avenue. They built a four-story
Italian Renaissance townhouse that was completed in 1909. Around 1900, they also purchased a
villa, known as "Sunnyhome", in
Lenox, Massachusetts. The Italianate style residence was originally built and was purchased from Elizabeth Bennett. Stevens died at his home in New York on December 12, 1911. His funeral was held at
Grace Church in Manhattan. His widow died in June 1930, leaving a net estate of $1,606,456, the majority of which was in securities and real estate. ==References==