Mowrer married Winifred Adams on May 8, 1909. They divorced in April 1933. In the spring of 1927, Mowrer met
Hadley Richardson shortly after her divorce from
Ernest Hemingway. On July 3, 1933, after a five-year courtship, Richardson and Mowrer married in London. Richardson was especially grateful to Mowrer for his warm relationship with
Jack "Bumby" Hemingway, her son from her former marriage to Hemingway. Soon after the marriage, they moved to a suburb of Chicago, where they lived during
World War II. Mowrer died in
Beaufort, South Carolina on April 4, 1971. ==Works==