John Tyler (allthetropes.org)
John Tyler (aka “His Accidency”) was the first Vice-President to inherit the Presidency. He was a longtime Democratic-Republican who was elected to the Vice Presidency on the Whig ticket, so he was rather unpopular with his former political supporters and had a tenuous relationship with his predecessor during his short vice-presidency.- John Tyler (Wikipedia)
John Tyler (March 29, 1790 – January 18, 1862) was the tenth president of the United States, serving from 1841 to 1845, after briefly holding office as the tenth vice president in 1841. He was elected vice president on the 1840 Whig ticket with President William Henry Harrison, succeeding to the presidency following Harrison’s death 31 days after assuming office. Tyler was a stalwart supporter and advocate of states’ rights, including regarding slavery, and he adopted nationalistic policies as president only when they did not infringe on the states’ powers. His unexpected rise to the presidency posed a threat to the presidential ambitions of Henry Clay and other Whig politicians and left Tyler estranged from both of the nation’s major political parties at the time.