John Chipman Gray was born on 14 July 1839 in Brighton, Massachusetts. The half-brother of Horace Gray, who became a US Supreme Court justice, John also received his BA from Harvard in 1859, an LL.B. in 1861, and an MA in 1862. After service in the Union Army during the Civil War, Gray practiced law in Boston, helped to found the American Law Review in 1866, and began lecturing at Harvard Law School in 1869. In 1875 Gray was named to the first Story Professorship, and in 1883 became the Royall Professor of Law, a position that he held until retiring in 1913. Gray died on 25 February 1915 in Boston, Massachusetts.
From The Dictionary of Modern American Philosophers in Oxford Reference.