Louis Francis Cristillo ( March 6 , 1906 -- March 3 , 1959 ) , known by the stage name Lou Costello , was an American actor and comedian best remembered for the comedy double act of Abbott and Costello , with Bud Abbott .
Lou Costello , born Louis Francis Cristillo ( March 6 , 1906 - March 3 , 1959 ) , was an American actor and comedian best known as half of the comedy team of Abbott and Costello , with Bud Abbott .