James Madison, Jr. (March 16, 1751 – June 28, 1836) is considered one of
the Founding Fathers of the United States. He was the principal author of the
U.S. Constitution, and is often called the "Father of the Constitution". He was 
the first president to have served in the U.S. Congress.

Benjamin Franklin  was one of the Founding Fathers of the United States. A noted polymath, Franklin was a leading author and printer, political theorist, politician, postmaster, scientist, inventor, satirist, civic activist, statesman, and diplomat. As a scientist, he was a major figure in the history of physics for his discoveries and theories regarding electricity. He invented the lightning rod, bifocals, the Franklin stove, and a carriage odometer. He formed both the first public lending library in America and the first fire department in Pennsylvania.  

A political cartoon by Franklin urged the colonies to join together during
the French and Indian War.

                          
John Adams was born on this date in 1735 in Braintree, Mass.
A conservative Federalist, he was one of  the most influential
Founding Fathers of the United States.