Try to do the math on this: John Tyler, born in 1790, became the 10th president of the United States, taking office in 1841 after the death of William Henry Harrison. And two of his grandchildren are still alive!
Of course, not much from Tyler's time is still around. In the year of his birth, President George Washington gave the first State of the Union address and Thomas Jefferson served as his secretary of state.
In Europe, a young upstart 2nd lieutenant named Napoleon Bonaparte was making a name for himself in the French Revolution.
And in the realm of technological innovation, one of the most successful innovators of that age, Harvey Kennedy, invented the shoelace.
In Tyler's life between 1790 and 1862, he fathered 15 children, and two of his grandsons are still living, reports mentalfloss.com.
With 15 children under his belt, Tyler became the most prolific American president, according to his genealogy.
Tyler was also the first president to wed while he was in office.
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