Molly Pitcher's fame began two years after the signing of the Declaration of Independence by the American Colonies.
Molly Pitcher is generally identified as the Irish immigrant woman Mary Hayes McCauley (or Mary Ludwig Hays, who supposedly married John Casper Hays before she married William Hayes).
Some of these details may have been borrowed from the actions of the other leading candidate for the "real" Molly Pitcher, a woman named Margaret Corbin.