John Tyler
John Tyler became the American president after William Henry Harrison passed away in 1841, just 31 days after the latter had entered the office. Tyler was his Vice President and took that seat soon after. He held his presidential position from 1841 to 1845. Tyler is an important figure in American history, responsible for the annexation of Texas.
There is debate among historians whether he was a good president or not. Tyler was an enslaver born into a prominent slaveholding family in Virginia and had around 26 enslaved people himself. He’s also an unpopular figure because, during the Civil War, he sided with the Confederacy.