 20. Alexander Hamilton, 21. James Madison, 25. Thomas Jefferson, old man, 33. Oh, wow. John Adams, second president, 40. Paul Revere, the guy that rode the horse, I figured he'd be the 18-year-old, right? Yeah. 41. George Washington, after, again, having fought in the French and Indian Wars, you know, 20 years prior to that, is now 44 years old.