John E. Martin was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 politician and jurist from Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

.

Born in Green Bay, Wisconsin

Green Bay, Wisconsin

Green Bay is a city in and the county seat of Brown County in the U.S. state of Wisconsin, located at the head of Green Bay, a sub-basin of Lake Michigan, at the mouth of the Fox River. It has an elevation of above sea level and is located north of Milwaukee. As of the 2010 United States Census,...

, Martin went to University of Wisconsin–Madison and then received his law degree from Notre Dame Law School

Notre Dame Law School

The Notre Dame Law School, or NDLS, is the professional graduate law program of its parent institution, the University of Notre Dame. Established in 1869, NDLS is the oldest Roman Catholic law school in the United States. NDLS is ranked 22nd among the nation's "Top 100 Law Schools" by U.S. News &...

. During World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, he served in the United States Army

United States Army

The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

. In 1938, he was elected Wisconsin Attorney General serving until his appointment to the Wisconsin Supreme Court

Wisconsin Supreme Court

The Wisconsin Supreme Court is the highest appellate court in the state of Wisconsin. The Supreme Court has jurisdiction over original actions, appeals from lower courts, and regulation or administration of the practice of law in Wisconsin.-Location:...

in 1948. He eventually became chief justice of the court and retired in 1962.