"William Henry Harrison" was the List of Presidents of the United States/ninth President of the United States (1841), an Military history of the United States/American military officer and Politics of the United States/politician, and the first president to die in office. He was 68 years, 23 days old when inaugurated, the oldest president to take office until Ronald Reagan in 1981. Harrison died on his 32nd day in office of complications from pneumonia, serving the shortest tenure in United States presidential history. His death sparked a brief constitutional crisis, but its resolution settled many questions about United States presidential line of succession#Acting President and President/presidential succession left unanswered by the United States Constitution/Constitution until the passage of the Twenty-fifth Amendment to the United States Constitution/25th Amendment in 1967. He was the #Legacy/grandfather of Benjamin Harrison, who was the 23rd President from 1889 to 1893.If you enjoy these quotes, be sure to check out other famous presidents! More William Henry Harrison on Wikipedia.