America should count itself fortunate that four of our first five presidents -- George Washington, Thomas Jefferson, James Madison and James Monroe -- did not have sons that survived to adulthood. Otherwise the early days of our republic would have featured presidential elections which would have seemed like wars of dynastic ambitions. There were certainly some political dynasties -- the Adams family, the Harrisons, the Pierces, the Tylers, the Van Burens, the Lincolns and even a populist like Andrew Jackson whose nephew Andrew Jackson Donelson ran for vice president.