George Franklin Greenleaf, Jr. (September 29, 1874 – May 30, 1936) was an American football

American football

American football is a sport played between two teams of eleven with the objective of scoring points by advancing the ball into the opposing team's end zone. Known in the United States simply as football, it may also be referred to informally as gridiron football. The ball can be advanced by...

 player and medical doctor. A native of Brazil, Indiana

Brazil, Indiana

Brazil is a city in Clay County, Indiana, United States. The population was 7,912 at the 2010 census. The city is the county seat of Clay County. It is part of the Terre Haute Metropolitan Statistical Area...

, Greenleaf was the son of George F. Greenleaf, Sr. (1848–1900) and Agnes Dalgleish Staines. He played college football

College football

College football refers to American football played by teams of student athletes fielded by American universities, colleges, and military academies, or Canadian football played by teams of student athletes fielded by Canadian universities...

 team at the University of Michigan

University of Michigan

The University of Michigan is a public research university located in Ann Arbor, Michigan in the United States. It is the state's oldest university and the flagship campus of the University of Michigan...

 and was the quarterback of the 1893

1893 Michigan Wolverines football team

The 1893 Michigan Wolverines football team represented the University of Michigan in the 1893 college football season. The team, with Frank Barbour as head coach, compiled a 7–3 record and outscored its opponents by a combined score of 278 to 102...

 and 1894 Michigan Wolverines football team

1894 Michigan Wolverines football team

The 1894 Michigan Wolverines football team represented the University of Michigan in the 1894 college football season. The team, with William McCauley as head coach, compiled an 9–1–1 record and outscored its opponents by a combined score of 244 to 84. The Wolverines played a home-and-away series...

s. He played at the end position on the 1895

1895 Michigan Wolverines football team

The 1895 Michigan Wolverines football team represented the University of Michigan in the 1895 college football season. The team, coached by medical student William McCauley, compiled an 8–1 record, won seven of their games by shutouts, and outscored their opponents by a combined score of 266 to...

 and 1896 team

1896 Michigan Wolverines football team

The 1896 Michigan Wolverines football team represented the University of Michigan in the 1896 college football season. They played their home games at Regents Field in Ann Arbor, Michigan and competed in the newly-established Western Conference, later to be known as the Big Ten Conference...

s. He graduated from Michigan's Department of Medicine and Surgery, and became a medical doctor practicing in Indiana and Illinois. In 1899, he was the head coach at Miami University football

Miami RedHawks football

The Miami University RedHawks, known as the Miami Redskins before 1996, are a NCAA Division I FBS college football program that competes in the Mid-American Conference...

 team. In February 1914, he married Estella Fuquay at Evansville, Indiana

Evansville, Indiana

Evansville is the third-largest city in the U.S. state of Indiana and the largest city in Southern Indiana. As of the 2010 census, the city had a total population of 117,429. It is the county seat of Vanderburgh County and the regional hub for both Southwestern Indiana and the...

. In his later years, he practiced medicine at 561 Diversity Parkway and lived at 2745 Pine Grove Avenue in Chicago. In May 1936, he died of hypertension and cerebral hemorrhage at his Chicago apartment.