This story sounds too impossible to be true, but it is. John Tyler was born in 1790, and he was the 10th president of the United States in 1841. Believe it or not, he has two living grandchildren. For perspective consider this: When Tyler was born, George Washington was giving his State of the Union address. When Tyler became president, the civil war was still 20 years away! But how is this possible? Here’s some math for you: Tyler had 15 children, and in 1853 he was 63 when his son Lyon Gardiner Tyler was born. Lyon had six children, with two of them, Harrison Ruffin Tyler and Lyon Gardiner Tyler Jr., born when he was in his 70s in 1924 and 1928 respectively. Both men, now in their 80s, still live in Virginia.