Two grandsons of President Tyler, who was born on March 29 1790, in George Washington’s first term, are alive.
Interview (CBS) with Harrison Ruffin Tyler, the younger of them, who lives at Sherwood Forest, the Virginia estate Tyler acquired during his presidency. It had once belonged to Tyler’s immediate predecessor, William Henry Harrison, who had sold it in 1793. Then it had been called Walnut Grove. Tyler renamed it Sherwood Forest to signify that he had been outlawed by the Whig party.
The Whigs operated from 1833 (under the Democrat Jackson) to ’56. Their presidents – Harrison, Tyler, Taylor, Fillmore – governed for eight years between 1841 and ’53.
April 1841: messenger with letter announcing the death, after a month in office, of President Harrison, approaching Vice President Tyler on the porch of his home in Williamsburg, Virginia; in William Osborn Stoddard, The Lives of the Presidents, Vol 5, New York, Frederick A Stokes & Brother, 1888

January 29 2013 at 7:04 pm
Harrison Tyler says that Tyler acquired Sherwood Forest in 1840 – before he was president. Wikipedia says 1842.