M William Harrison

William Henry Harrison (1773–1841) was the ninth President in 1841, known for having the shortest presidency in American history. A hero of the Battle of Tippecanoe and the oldest president elected at the time, he delivered a famously long inaugural address in cold weather without a coat or hat.

Interesting anecdote: That marathon inaugural speech (nearly two hours long) in harsh weather is often blamed for Harrison catching pneumonia. He fell ill and died just 32 days into his term, the first U.S. President to die in office.