[1][3] His younger sister, Eleanor Thomas,[4] was married to Robert Livingston Beeckman, who served as the Governor of Rhode Island from 1915 to 1921.

Thomas sold his interest in the Consolidated National Bank in October 1907, also resigning from his positions.

Linda, who was "known as one of the country's most beautiful women," was introduced to Thomas by friends and after their marriage, they lived a life of luxury, with houses in Palm Beach, Manhattan, and Newport.

Before their 1924 divorce in Florida, they were the parents of one son together: Samuel Finley Thomas (1913–1989), who became a medical doctor.

[11] Thomas died after a three day illness at the Harbor Sanitarium in New York City on July 6, 1926.