Question: Which American physician co found Charles Horace Mayo

Context paragraphs:
Carle Vernet: Antoine Charles Horace Vernet aka.  Carle Vernet (14 August 175817 November 1836) was a French painter, the youngest child of Claude Joseph Vernet, and the father of Horace Vernet.

John Benjamin Murphy: John Benjamin Murphy, born John Murphy (December 21, 1857 in Appleton, Wisconsin – August 11, 1916 Mackinac Island, Michigan), was an American physician and abdominal surgeon noted for advocating early surgical intervention in appendicitis appendectomy, and several eponyms: Murphy’s button, Murphy drip, Murphy’s punch, Murphy’s test, and Murphy-Lane bone skid.  He is best remembered for the eponymous clinical sign that is used in evaluating patients with acute cholecystitis.  His career spanned general surgery, orthopedics, neurosurgery, and cardiothoracic surgery, which helped him to gain international prominence in the surgical profession.  Mayo Clinic co-founder William James Mayo called him "the surgical genius of our generation".

William James Mayo: William James Mayo (June 29, 1861 – July 28, 1939) was a physician and surgeon in the United States and one of the seven founders of the Mayo Clinic.  He and his brother, Charles Horace Mayo, both joined their father's private medical practice in Rochester, Minnesota, USA, after graduating from medical school in the 1880s.  In 1919, that practice became the not-for-profit Mayo Clinic.

Gregory Poland: Gregory A. Poland is an American physician and vaccinologist.  He is the Mary Lowell Leary professor of medicine at the Mayo Clinic in Rochester, Minnesota, as well as the director of the Mayo Clinic's Vaccine Research Group.  He is also the editor-in-chief of the medical journal "Vaccine".

Augustus Stinchfield: Augustus W. Stinchfield (December 21, 1842 – 1917) was an American physician and one of the co-founders—along with Drs. Charles Horace Mayo, William James Mayo, Christopher Graham, E. Starr Judd, Henry Stanley Plummer, Melvin Millet and Donald Balfour—of the Mayo Clinic in Rochester, Minnesota.

Charles Horace Mayo: Charles Horace Mayo (July 19, 1865 – May 26, 1939) was an American medical practitioner and was one of the founders of the Mayo Clinic along with his brother, William James Mayo, Augustus Stinchfield, Christopher Graham, E. Star Judd, Henry Stanley Plummer, Melvin Millet, and Donald Balfour.

William Worrall Mayo: William Worrall Mayo ( ; May 31, 1819 – March 6, 1911) was a British-American medical doctor and chemist.  He is best known for establishing the private medical practice that later evolved into the Mayo Clinic.  He was a descendant of a famous English chemist, John Mayow.  His sons, William James Mayo and Charles Horace Mayo, established a joint medical practice in Rochester in the U.S. state of Minnesota in the 1880s.

Charles William Mayo: Charles William Mayo (July 28, 1898 – July 28, 1968) was an American surgeon, and a member of the board of governors of the Mayo Clinic beginning in 1933.  He was the son of Mayo Clinic co-founder Charles Horace Mayo and Edith (Graham) Mayo.

Stephen Philbrick: Stephen Philbrick is an American author, poet, and licensed United Church of Christ minister.  He is the son of poet Charles Horace Philbrick, the father of author Frank Philbrick, the brother of master furniture maker Timothy Philbrick, the cousin of author Nathaniel Philbrick, and the uncle of artist Clancy Philbrick.  He is a linchpin of the Philbrick literary family.  Philbrick graduated from Brown University in 1971, and now lives in Windsor, Massachusetts.  Philbrick is the minister of the West Cummington Congregational Church, which burned to the ground in 2010.  The church was rebuilt in the following two years and reopened on November 4, 2012.  The occasion of the reopening was marked by a celebration of the congregation and a service by Philbrick.

Mayo High School: Mayo High School (Mayo) is an American high school in Rochester, Minnesota.  It is named after the brothers William James Mayo and Charles Horace Mayo, physicians and founders of the Mayo Clinic.  It is a public school and part of the Rochester Independent School District #535.  The current principal of Mayo High School is Tom Olson.

Supporting paragraphs: Charles Horace Mayo Augustus Stinchfield
Answer: Augustus W. Stinchfield