He was sworn in as vice president March 4, 1841 & as president April 6, 1841
[DOC] [TLE] William Henry Harrison - Wikipedia [PAR] William Henry Harrison, Sr. (February 9, 1773  April 4, 1841) was the ninth 
President of the United States (1841), an American military officer and politician, 
and the last president born as a British subject.