Trivia: where did the term Peeping Tom come from?

According to legend a man named Leofric taxed the people of Coventry heavily. His wife, lady Godiva, begged him not to. Leofric said he would end the tax if she rode through the streets of Coventry naked. So she did. Peeping Tom is a much later addition to the story. Everybody in Coventry was supposed to stay indoors with his or her shutters closed. However peeping Tom had a sneaky look at Godiva and was struck blind.