William Henry Harrison was the ninth president of the United States, serving from March 4 to April 4, 1841, the shortest presidency in U.S. history. He was also the first U.S. president to die in office, causing a brief constitutional crisis, since presidential succession was not then fully defined in the U.S. Constitution. Harrison was the last president born as a British subject in the Thirteen Colonies. He was a member of the Harrison family of Virginia, a son of Benjamin Harrison V, who was a U.S. Founding Father; he was also the grandfather of Benjamin Harrison, the 23rd U.S. president.
Harrison was born in Charles City County, Virginia. In 1794, he participated in the Battle of Fallen Timbers, an American military victory that ended the Northwest Indian War. In 1811, he led a military force against Tecumseh's confederacy at the Battle of Tippecanoe, where he earned the nickname "Old Tippecanoe". He was promoted to major general in the Army during the War of 1812, and led American infantry and cavalry to victory at the Battle of the Thames in Upper Canada.
Harrison's political career began in 1798, with an appointment as secretary of the Northwest Territory.