Rufus Spalding Day, Jr. was a noted Cleveland, Ohio attorney. A partner of the law firm Squire, Sanders, & Dempsey, he was also an assistant attorney general for Ohio, and was active in many legal and other organizations. He was descended from a family which included several noted lawyers and judges. His father, Rufus S. Day Sr., and his uncle, Luther Day, were founders of the Cleveland law firm Jones, Day, Reavis & Pogue. Another uncle, William Day, was a federal judge, and a great uncle, Robert H. Day, served on the Ohio Supreme Court. His grandfather, William Rufus Day, was a justice of the United States Supreme Court. William Rufus Day was born in Ravenna, Ohio, attended the University of Michigan, was admitted to the Ohio Bar in 1872, and practiced law in Canton, Ohio. He served as judge of the Court of Common Pleas 1886-1890 and was appointed assistant Secretary of State in 1897. As Secretary of State in the cabinet of President William A. McKinley, he negotiated the treaty that ended the Spanish-American War. He served as an associate justice of the United States Supreme Court 1903-1922.
From the description of Rufus Spalding Day, Jr. family papers, 1790-1983. (Rhinelander District Library). WorldCat record id: 43874617
