Businessman, Newspaper Publisher. He was the grandson and heir of Marshall Field, who founded the Chicago, Illinois-based Marshall Field and Company department stores. He was raised primarily in England where he received his education at Eton College and Cambridge University. In 1917 he returned home to join the 1st Illinois Cavalry and served with the 122nd Field Artillery in France during World War I. After the end of World War I, he worked as a bond salesman at Lee Higginson and Company and soon left to start his own investment business. He moved to New York City, New York and became the director of Guaranty Trust Company. Together with Charles F. Glore and Pierce C. Ward, he then formed the investment banking firm of Marshall Field, Glore, Ward and Company, but left the firm in 1926 to pursue other interests. In June 1940 he helped to finance the leftist daily newspaper PM and eventually bought out the other investors to become its publisher. In 1941 he founded the Chicago Sun newspaper and in 1948 he merged it with the Chicago Daily Times and created the Chicago Sun-Times. In 1944 he purchased the Simon & Schuster publishing company and Pocket Books, a Simon & Schuster division. He also created Parade as a weekly magazine supplement for his own paper and for others in the US and by 1946, it had achieved a circulation of 3.5 million. An avid polo player, he invested heavily in Thoroughbred racehorses both in the US and England. Among his successful British horses were three fillies who won the Irish Oaks and Golden Corn who won England's Middle Park Stakes and Champagne Stakes in 1921 and the July Cup in 1923. In the US, Nimba was the 1927 American Champion Three-Year-Old Filly, and Tintagel won the 1935 Futurity Stakes and was voted American Champion Two-Year-Old Colt. A philanthropist, he supported a number of charitable institutions and in 1940 he created the Field Foundation. He personally served as President of the Child Welfare League of America and also donated substantial funds to support the New York Philharmonic symphony orchestra and served as its President. He died of brain cancer in New York City, New York at the age of 63.