
author
1755–1835
A soldier, diplomat, and lawyer who helped define the young United States, John Marshall became one of its most influential constitutional thinkers. His 34-year tenure as Chief Justice transformed the Supreme Court into a powerful interpreter of the Constitution.
Born on September 24, 1755, in Virginia, John Marshall served as a Continental Army officer during the Revolutionary War before studying law at the College of William and Mary. He entered public life as a Virginia legislator, helped ratify the U.S. Constitution, represented Virginia in Congress, and served as an envoy to France during the XYZ Affair.
Marshall became Secretary of State under President John Adams in 1800 and was appointed the fourth Chief Justice of the United States the following year. He remained on the Court until his death in Philadelphia on July 6, 1835, making his 34-year tenure the longest of any Chief Justice at that time.
As head of the Marshall Court, he strengthened the authority of the federal judiciary and helped establish the principle of judicial review through Marbury v. Madison. His opinions in cases including McCulloch v. Maryland, Dartmouth College v. Woodward, and Gibbons v. Ogden shaped American constitutional law for generations.