Sidney Painter
Sidney Painter (September 23, 1902 – January 12, 1960) was an American medievalist and historian. He was a fellow of the Mediaeval Academy and professor of history and chairman of the department of history at Johns Hopkins University. Painter was born in New York City; after the Taft School he attended Yale University (AB 1925; PhD 1930). He was an influential member of American academia in the 1950s and served on many boards and committees. He was treasurer and secretary of the American Council of Learned Societies and was a member of the council of the Mediaeval Academy. He  was made a fellow in 1953. He wrote many influential books. His doctoral thesis was later published as "William Marshal: Knight-Errant, Baron, and Regent of England", and was supervised by Professor Sydney K. Mitchell at Yale University. He was an expert in medieval institutions but also believed in relating history from personal perspectives. He argued that the reign of King John cannot be understood without an intimate knowledge of the barons and their families and the division of family lands at the time. He died in Baltimore at the age of 57.