He was the last of three generations spanning nearly the entire history of the United States: When his grandfather was born, George Washington had just become president.

Harrison Ruffin Tyler, the last living grandson of President John Tyler, born 83 years after his grandfather left the White ...

And Harrison Ruffin Tyler was born in 1928 when that father was 75 years old and the presidential grandfather had been dead for more ... when President William Henry Harrison died in office.