William Henry Harrison served as the ninth president of the United States 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 and was the grandfather of Benjamin Harrison, the 23rd U.S. president.
Harrison was born into the Harrison family of Virginia in 1773 as a son of Benjamin Harrison V, a U.S. Founding Father. In 1794, Harrison 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.