Title: William Henry Harrison
Content:  William Henry Harrison (February 9, 1773April 4, 1841) was an American military officer and politician who served as the 9th president of the United States in 1841. Harrison died just 31 days after his inauguration, and had the shortest presidency in U.S. history. He was also the first U.S president to die in office, and a brief constitutional crisis resulted as presidential succession was not then fully defined in the United States Constitution. Harrison was the last president born as a British subject in the Thirteen Colonies and was the grandfather of Benjamin Harrison, the 23rd president of the United States. Harrison was born in Charles City County, Virginia, a son of Benjamin Harrison V, who was a Founding 
Title: Jane Irwin Harrison
Content:  In 1840 William Henry Harrison was elected president. His wife Anna was too ill to travel when her husband left Ohio for his inauguration, but assisted by her aunt, Jane Irwin Findlay (her father's sister, who was then seventy-three), Jane Irwin Harrison acted as official hostess during President Harrison's brief tenure in office. Barely a month into his first term, he died from pneumonia on April 4, 1841.
Title: March 1901
Content:  an African-American man at the stake in front of the Navarro County Courthouse. John Henderson had confessed to the murder of a white woman, Mrs. Conway Younger, and was being transported to a prison in Fort Worth for his own safety, but a mob overpowered the officers guarding him when the train reached Itasca. ; Died:  Benjamin Harrison, 67, the 23rd President of the United States, died at his home at 1214 North Delaware Street in Indianapolis, a week after contracting pneumonia. Harrison, who had served one term as president, from 1889 to 1893, had been the grandson of William Henry Harrison, the ninth U.S. president. He was pronounced dead at 4:45 p.m. 
Title: William Henry Harrison
Content:  was of a "more dangerous character." A reporter for the New York Commercial indicated that, "...the country's people were deeply distressed and many of them in tears.” In the evening of Saturday, April 3, Harrison developed severe diarrhea and became delirious, and at 8:30 p.m. he uttered his last words, to his attending doctor, assumed to be for Vice President John Tyler: "Sir, I wish you to understand the true principles of the government. I wish them carried out. I ask nothing more." Harrison died at 12:30 a.m. on April 4, 1841, Palm Sunday, nine days after becoming ill and exactly one month after taking the 
Title: Inauguration of William Henry Harrison
Content:  The inauguration of William Henry Harrison as the ninth president of the United States was held on Thursday, March 4, 1841, at the East Portico of the United States Capitol in Washington, D.C. This was the 14th inauguration and marked the commencement of the only four-year term of both William Henry Harrison as president and John Tyler as vice president. The presidential oath of office was administered to Harrison by Chief Justice Roger B. Taney. Harrison died 8170 days days into his term, the first U.S. president to die in office and has the shortest presidential term in American history. Tyler then succeeded to the presidency, creating precedence which would be followed seven more times before it was officially regulated through the Twenty-fifth Amendment in 1967.
Title: Twenty-fifth Amendment to the United States Constitution
Content: In 1841, William Henry Harrison died in office. It had previously been suggested that the vice president would become acting president upon the death of the president, but Vice President John Tyler asserted that he had succeeded to the presidency, instead of merely assuming its powers and duties; he also declined to acknowledge documents referring to him as acting president. Although Tyler felt his vice presidential oath obviated any need for the presidential oath, he was persuaded that being formally sworn in would resolve any doubts. Accordingly, he took the oath and title of "President," without any qualifiers, moved into the White House and assumed full presidential powers. Though Tyler was sometimes 
Title: Equestrian statue of William Henry Harrison
Content:  William Henry Harrison was an American military officer and politician. Born into a planter class family in Virginia in 1773, Harrison joined the Regular Army in 1791 and participated in the Northwest Indian War. In 1798, he entered into politics, serving in various positions in the Northwest Territory and later the Indiana Territory. Following military service in the War of 1812, Harrison again returned to politics, serving in various political offices in the newly created state of Ohio. He was elected President of the United States in the 1840 election, but died shortly after his inauguration, becoming the first American president to die in office. Harrison was the first of eight American presidents from Ohio.
Title: William Henry Harrison
Content:  mate, under the campaign slogan "Tippecanoe and Tyler Too." Harrison defeated Van Buren in the 1840 presidential election, making him the first of only two Whigs (Zachary Taylor was the second) to win the presidency. Just three weeks after his inauguration, Harrison fell ill and died days later. After resolution of an ambiguity in the constitution regarding succession to the powers and duties of the office, Tyler became president. At 68, Harrison was the oldest person to assume the U.S. presidency until Ronald Reagan was elected in 1980 at 69. Though he is often omitted in historical presidential rankings due to his brief tenure, he is remembered for his Indian entreaties, and also his inventive election campaign tactics.
Title: April 4
Content:  state (20 at that time). ; 1841 &ndash; William Henry Harrison dies of pneumonia, becoming the first President of the United States to die in office, and setting the record for the briefest administration. Vice President John Tyler succeeds Harrison as President. ; 1865 &ndash; American Civil War: A day after Union forces capture Richmond, Virginia, U.S. President Abraham Lincoln visits the Confederate capital. ; 1866 &ndash; Alexander II of Russia narrowly escapes an assassination attempt by Dmitry Karakozov in the city of Saint Petersburg. ; 1887 &ndash; Argonia, Kansas elects Susanna M. Salter as the first female mayor in the United States. 
Title: List of presidents of the United States who died in office
Content:  Virginia snakeroot. All this only weakened Harrison further. Initially, no official announcement was made concerning Harrison's illness, which, the longer he remained out of public view, fueled public speculation and concern. By the end of the month large crowds were gathering outside the White House, holding vigil while awaiting any news about the president's condition. On the evening of April 4, 1841, nine days after becoming ill, and exactly one month after taking the oath of office, Harrison died; the first U.S. president to die in office. His last words were to his attending doctor, though assumed to be directed at Vice President 

Question: who became president when henry harrison died?
Answer: John Tyler.