Life span: Born: March 28, 1790, in Virginia
Died: January 18, 1862, in Richmond, Virginia, at that time the capital of the Confederate States of America.
Presidential term: April 4, 1841 - March 4, 1845
As Harrison was the first president to die in office, his death raised a number of questions. And the way the questions were settled created perhaps Tyler's greatest accomplishment, which because known as the Tyler Precedent.
When Harrison's cabinet essentially tried to block Tyler from becoming president, Tyler resisted quite forcefully. He insisted that he was the new president, and the process he instituted became traditional.
Supported by: Tyler had been involved in party politics for decades prior to the 1840 election, and was nominated by the Whig Party. The election of 1840 was notable as it was the first presidential election to feature campaign slogans. And Tyler name wound up in one of the most famous slogans in history, "Tippecanoe and Tyler Too!"
Opposed by: Tyler was generally distrusted by the Whig leadership, though he had been added to the Whig ticket in 1840. And when Harrison, the first Whig president, died so early in his term, the party leaders were perplexed.
Tyler, before long, alienated the Whigs. He also made no friends among the opposition party, the Democrats. And by the time the 1844 election had arrived, he was essentially left with no political allies. He was not nominated by the Whigs in 1844, and he retired to Virginia.
Presidential campaigns: The one time Tyler ran for high office was in the election of 1840, as Harrison's running mate. In that era he was not required to campaign in any tangible way, and he tended to keep quiet during the election year so as to sidestep any important issues.
Spouse and family: Tyler was married twice, and fathered more children than any other president.
Tyler fathered eight children with his first wife, who died in 1842, during Tyler's term as president. He also fathered seven children with his second wife, the last child being born in 1860.
In early 2012 news stories reported the unusual circumstance that two grandsons of John Tyler were still living. As Tyler had fathered children late in life, and one of his sons had also, the elderly men were indeed grandchildren of a man who had been president 170 years earlier.
Education: Tyler was born into a wealthy Virginia family, grew up in a mansion, and attended Virginia's prestigious College of William and Mary.
Early career: As a young man Tyler practiced law in Virginia and became active in state politics. He also served in the U.S. House of Representatives for three terms before becoming governor of Virginia. He returned to Washington, representing Virginia as a U.S. Senator from 1827 to 1836.
Later career: Tyler retired to Virginia after his term as president, but became involved in national politics on the eve of the Civil War. Tyler helped organize a peace conference which was held in Washington, D.C. in February 1861, and which did not, of course, prevent the Civil War.
Tyler sided with the Confederacy when his home state of Virginia seceded, and he was elected to the Confederate congress in early 1862. However, he died before he could take office, so he never actually served in the Confederate government.
Nickname: Tyler was mocked as "His Accidency," as he was considered, by his opponents, an accidental president.
Unusual facts: Tyler died during the Civil War, and he was, at the time of his death, a supporter of the Confederacy. He thus holds the unusual distinction of having been the only president whose death was not memorialized by the federal government.
By contrast, former president Martin Van Buren, who died the same year, at his home in New York State, was accorded elaborate honors, with flags flown at half staff and ceremonial cannons fired in Washington, D.C.
Death and funeral: Tyler had suffered from illnesses, believed to be cases of dysentery, during the last years of his life. Already quite ill, he apparently suffered a fatal stroke on January 18, 1862.
He was given an elaborate funeral in Virginia by the Confederate government, and he was praised as an advocate of the Confederate cause.
Legacy: Tyler's administration had few accomplishments, and his real legacy would be the Tyler Precedent, the tradition by which vice presidents assumed the power of the presidency upon the death of a president.