Personal life
In 1903, Woodward met Elsie Ogden Cryder (1882–1981) at Saratoga Springs, New York, a daughter of tea importer Duncan Cryder and Elizabeth Callender (née Ogden) Cryder and one of the "famous Cryder triplets". They were married at Grace Church in New York on October 24, 1904. Elsie's younger sister Edith was the wife of Frederick Lothrop Ames Jr. and her aunt, the former Mary Hone Ogden, was the wife of Charles Francis Adams Jr. (the grandson of president John Quincy Adams). Together, they were the parents of one son and four daughters, including:
Edith Woodward (1905–1971), who married Thomas Moore Bancroft in 1929.
Elizabeth Ogden Woodward (1907–1986), who married Robert Livingston Stevens (1907–1972) in 1928. They divorced in 1935, and she married John Teele Pratt Jr., a son of John Teele Pratt, in 1935. After his death in 1969, she married Squaw Valley Ski Resort founder Alexander Cochrane Cushing in 1971.
Sarah Woodward (1910–1991), who married Charles Arthur Moore III (1909–1989) in 1936. They divorced and she married Marshall Christopher Sewall (1908–1983) in 1949.
Ethel Woodward (b. 1914), who married Philippe de Croisset (1912–1965), a son of French playwright Francis de Croisset, in 1941. His nephew was Count Philippe de Montebello and his sister was Marie-Laure, Vicomtesse de Noailles. After having two sons, Ethel and Philippe divorced and he married Jacqueline de la Chaume (after his death in 1965, Jacqueline became the third wife of actor Yul Brynner).
William Woodward Jr. (1920–1955), who married Ann Crowell in 1943. In 1955 Ann shot and killed William, reportedly thinking him a burglar. She later committed suicide in 1975, after Truman Capote published a story that "depicted her as a murderous vamp."
In 1908, they lived at 11 West 51st Street in New York City and had a summer home in Mount Kisco, New York. Around 1910, they purchased The Cloisters on Ochre Point in Newport, Rhode Island, the former estate of Catherine Lorillard Kernochan, which had been designed by architect J.D. Johnston around 1885. The Woodwards hired New York architects Delano & Aldrich to complete a major renovation, which was completed by 1914. The home was torn down in 1950 and the site was divided into smaller parcels for contemporary homes. The family also relocated from their 51st Street residence to 9 East 86th Street, which Woodward had purchased for $200,000 from William E. Iselin in 1916 and, again, hired architects Delano & Aldrich to design and build him a residence.
Woodward died on September 25, 1953, aged 77, at his home in Manhattan. After a funeral at St. James Episcopal Church in Manhattan, he was buried at Woodlawn Cemetery, Bronx. He left the estate to his son, William Woodward Jr., whose untimely death two years later in 1955 saw the end of Belair Stud. His widow, considered "one of the last grandes dames of New York society", died in her apartment at The Waldorf Towers, where she had lived since 1956, in 1981.