Generations Defining — and Redefining — American History

Americans naturally tend to think of their presidents in terms of generations, like they do with their families. This may have started with the news that former Presidents John Adams and Thomas Jefferson both died on July 4, 1826, half a century to the day the Continental Congress adopted the Declaration of Independence they jointly drafted.
The Founding Generation (birth years 1732-1767) held the presidency for nearly half a century, from 1789 to 1837. Five were adults during the American Revolution. Two had childhood memories of it: John Quincy Adams of watching the gunfire smoke from…