President John Tyler was born in 1790, when George Washington was in his first term.
He became president when William Henry Harrison died in office in 1841. His wife died the following year, and a year after that he married Julia Gardiner, who was 30 years his junior.
In 1853, while Frankin Pierce was president, their son Lyon was born.
Lyon took a page from his father's book, and remarried when he was 73 to a much younger woman.
In 1924, when Calvin Coolidge was president, their son Lyon Jr. was born.
Lyon Jr. is still alive today.
As a result, John Tyler, his son Lyon, and his grandson Lyon Jr. were alive during the administrations of every single U.S. president.