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.
Augustus Stinchfield
Augustus W. Stinchfield( December 21, 1842 – March 15, 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 H. Upton
Charles Horace Upton( August 23, 1812 – June 17, 1877) was a nineteenth- century politician from Massachusetts and Virginia.
Charles Marie Louis Joseph Sarrabezolles
Charles Marie Louis Joseph Sarrabezolles( December 27, 1888 – February 11, 1971), also known as" Carlo Sarrabezolles"( or Charles or Charles- Marie), was a French sculptor.
Tony Gallopin
Tony Gallopin( born 24 May 1988) is a French professional road racing cyclist, who currently rides for UCI WorldTeam.
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.
Charles Gottlieb Raue
Charles Gottlieb Raue or Charles Gottlieb Raue or Charles Godlove Raue( 11 May 1820 – 6 August 1896) was a United States homeopathic physician.
Susan Quaggin
Susan E. Quaggin is a Canadian nephrologist.
She is the Charles Horace Mayo Professor of Medicine at Northwestern University Feinberg School of Medicine, Director of the Feinberg Cardiovascular Research Institute and chief of the Division of Nephrology.
Charles H. Holmes
Charles Horace Holmes( October 24, 1827 – October 2, 1874) was a member of the United States House of Representatives from New York.
Charles A. Cummings
Charles A. Cummings, or Charles A. Comings, was a Michigan politician.

Question: Who is younger, Tony Gallopin or Charles Horace Mayo?