John Ebsworth^[1] Owsley (March 17, 1883 – July 14, 1953) was an American football player and coach and businessman. He played college football, principally as a left halfback, for Yale University from 1901 to 1904. He was the head coach of Yale's undefeated 1905 football team that outscored opponents 226 to 4. He also served as the head football coach at the United States Naval Academy in 1925. He gained a reputation as a wartime producer of armaments, working with Marlin-Rockwell Corporation during World War I and with the High Standard Manufacturing Company during World War II. He was one of the highest paid persons in the United States in 1941 and 1942.

Owsley was born in Chicago, Illinois, in 1883. His father was Heaton Owsley (1856–1930), an Illinois native and manufacturer.^[2] His mother, Harriet (Byrne) Owsley was a Mississippi native who died in the same year that Owsley was born.^[3] He was the nephew of Carter Harrison Jr., the mayor of Chicago from 1897 to 1905.^[4] Owsley attended preparatory school at the Phillips Academy in Andover, New Hampshire, graduating in 1902.^[3]

Owsley enrolled at the Sheffield Scientific School at Yale University in 1901 at age 18. He played for the Yale Bulldogs football team in 1901, 1903, and 1904.^[6] He played most of the 1901 season with Yale's freshman football team but was brought into the 1901 Harvard–Yale game a substitute.^[6] During the 1902 season, Owsley was ineligible due to "scholarship deficiencies."^[7] During the 1903 and 1904 seasons, Owsley was a starter, mostly at the left halfback position, but occasionally appearing at right halfback, fullback and quarterback.^[8] After the 1904 season, Owsley was selected as a second-team All-American at the halfback position by The New York Sun.^[9]

After the 1905 football season, Owsley worked for the Scovill Manufacturing Company in Waterbury, Connecticut.^[3] In June 1906, he underwent surgery for appendicitis and traveled west to recuperate. He accepted a position with Merrill & Ring Lumber Co., at Seattle, Washington, in the fall of 1906. He remained in Seattle until the fall of 1908.^[3] Owsley returned to Connecticut in November 1908 to help the Yale football team prepare for its game against Princeton.^[22]

Owsley married Helen Blanche Hall in November 1908 at New Haven, Connecticut.^[4] Her father, John M. Hall, was the president of the New York, New Haven & Hartford Railroad.^[23] Owsley and his wife had two daughters, Julia, born November 27, 1913, and Helen, born August 18, 1920.^[24]

From 1908 until at least 1910, Owsley continued to work in the logging business, buying and selling lumber for people in the East. He lived in Seattle and made occasional short trips to the East.^[3]

In December 1915, Owsley became employed by Marlin-Rockwell Corporation, the largest producers of machine guns in the world. On January 7, 1918, the company sent a letter in support of a passport application to allow Owsley, then holding the position of assistant general manager, to travel to France to investigate the use of machine guns in aircraft. The letter noted that Owsley was given the charge "to observe the requirements of the airplane program in France as it may apply to the Marlin Aircraft Guns, and return to our organization with the practical information that will enable us to co-operate with the Government in manufacture and shipment to best advantage of all concerned."^[2] His application was granted, and he arrived in Liverpool, England, on January 22, 1918, as a passenger on the St. Paul.^[25] On July 1, 1918, Marlin-Rockwell submitted an affidavit in support of an application to renew Owsley's passport to allow him to remain in England, noting that his presence was needed to demonstrate the company's Browning machine rifle, Browning machine gun, Barlow bombs, and Marlin aircraft gun, and to observe bomb tests.^[26] He returned from Europe on September 30, 1918, as a passenger of the SS Adriatic.^[27]

At the time of the 1920 United States Census, Owsley was living in New Haven, Connecticut, with his mother-in-law Julia W. Hall, his wife Helen H. Owsley, a daughter Julia Hall Owsley, and four live-in servants. His occupation was listed at that time as the manager of an oil field.^[28]

At the time of the 1930 United States Census, Owsley was living in New Haven, Connecticut, with his mother-in-law Julia W. Hall, his wife Helen H. Owsley, two daughters, Julia and Helen, and five live-in servants. His occupation was listed at that time as a lumber dealer.^[29]

Owsley had developed a reputation as "a wartime production authority in New England" based on his service with Marlin-Rockwell during World War I.^[30] In 1940, Owsley helped organize High Standard Manufacturing Company, an armaments company based in New Haven, Connecticut.^[31] In October 1940, Owsley secured a $12 million order from the British Purchasing Commission for machine guns to be mounted on airplanes for the Royal Air Force.^[32] In 1941 and 1942, Owsley was included on a list compiled by the Treasury Department of the top salary earners in the United States. His salary in 1942 was reported as $421,206, a reduction of $122,000 from his 1941 salary.^[33][34] Owsley served as High Standard's vice president until 1945, continuing thereafter as a director until his retirement in approximately 1948.^[30] In a draft registration card completed at the time of World War II, Owsley indicated that he was living at 300 Prospect Street, New Haven, Connecticut, with his wife Helen Hall Owsley, and that he was working for the High Standard Mfg. Co. in Hamden, Connecticut.^[35]

Owsley's wife, Helen, died in August 1943.^[36] Owsley later remarried to Mary Gunn.