Born on December 4th (my fellow Savage sag) Rapper Jay-Z allegedly developed his stage name as a reference to New York's J/Z subway lines that have a stop in his Bed-Stuy, Brooklyn, neighborhood. Becoming the reigning rapper of New York City this rags to riches business man has accomplished more than a lot. Check out his bio over at starpulse.
Fact source: http://www.starpulse.com/Music/Jay-Z/Biography/
image source: rocnation.com