William Henry Harrison (February 9, 1773 – April 4, 1841) was an American military officer and politician who served as the ninth president of the United States in 1841. He died of typhoid, pneumonia or paratyphoid fever 31 days into his term (the shortest tenure), becoming the first president to die in office. After the War of 1812, he moved to Ohio where he was elected to represent the state's 1st district in the House in 1816. When reporting to Secretary Eustis, Harrison informed him that the battle occurred near the Tippecanoe River and that he feared an imminent reprisal attack. The first dispatch did not make clear which side had won the conflict, and the secretary at first interpreted it as a defeat; the follow-up dispatch clarified the situation. When no second attack came, the Shawnee defeat was more certain.