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Personal life, later life, and death

In 1867, Westinghouse met and soon married Marguerite Erskine Walker. They were married for 47 years, and had one son, George Westinghouse III, who in turn had six children.

Westinghouse remained a captain of American industry until 1907, when the financial panic of 1907 led to his resignation from control of the Westinghouse company. By 1911, he was no longer active in business, and his health was in decline.

George and Marguerite Westinghouse maintained a large home in Pittsburgh called Solitude, building up from an existing house and land purchased by George in 1871. They were part of a social class of very rich local industrialists including neighbors Henry Clay Frick, Henry J. Heinz, and Andrew Carnegie. Their guests included Nicola Tesla, Lord Kelvin, and congressman William McKinley. By 1893, they had constructed Erskine Park in Lenox, Massachusetts, which they used as a summer home, in part as a respite from the gritty industrial environment of Pittsburgh. It was named for the family of Marguerite's grandparents. In 1989 they leased and then in 1901 purchased the Blaine House mansion in Washington D.C. Marguerite Westinghouse was reputed to host frequent and lavish entertainments there. In 1918 his former Pittsburgh home, Solitude, was razed and the land given to the City of Pittsburgh to establish Westinghouse Park. The house in Erskine Park was sold by the family in 1917 and subsequently demolished.

George Westinghouse died on March 12, 1914, in New York City at age 67. He was initially interred in Woodlawn Cemetery, Bronx, NY then removed on December 14, 1915. As a Civil War veteran, he was buried in Arlington National Cemetery, along with his wife Marguerite, who survived him by three months. She had also been initially interred in Woodlawn and removed and reinterred at the same time as George.