The surprising ages of the Founding Fathers on July 4, 1776

For the Journal of the American Revolution, Todd Andrlik compiled a list of the ages of the key participants in the Revolutionary War as of July 4, 1776. Many of them were surprisingly young:

Marquis de Lafayette, 18
James Monroe, 18
Gilbert Stuart, 20
Aaron Burr, 20
Alexander Hamilton, 21
Betsy Ross, 24
James Madison, 25

This is kind of blowing my mind…