What Age Were They When The Deceleration of Independence was Signed?

A partial list of the Founding Fathers’ ages on July 4, 1776:

Marquis de Lafayette, 18

Aaron Burr, 20

Alexander Hamilton, 21

James Madison, 25

John Jay, 30

Thomas Jefferson, 33

Thomas Paine, 39

John Adams, 40

George Washington, 44

Samuel Adams, 53

Benjamin Franklin, 70

Historian David McCullough explained the phenomenon of picturing our Founding Fathers as older than they actually were:

We tend to see them as much older than they were. Because we’re seeing them in portraits by Gilbert Stuart and others when they were truly the Founding Fathers — when they were president or chief justice of the Supreme Court and their hair, if it hadn’t turned white, was powdered white. We see the awkward teeth. We see the elder statesmen. At the time of the Revolution, they were all young. It was a young man’s–young woman’s cause.

(Via AEI)
http://www.economicpolicyjournal.com/2013/08/what-age-were-they-when-deceleration-of.html