William Henry Harrison is inaugurated as the ninth President of the United States on March 4, 1841. He died one month later on April 4, 1841, making his presidency the shortest one on record.
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.He was succeeded by his Vice president, William John Tyler who was sworn in on April 6, 1841 becoming the 10th President of the United States.
