Watch video · EXCLUSIVE: Marcia, Marcia Marcia! Brady Bunch's Maureen McCormick, 60, looks plumb tuckered out just days before her first Dancing With The Stars performance. Marcia Brady: [Marcia lost her Diary and is accusing one of the boys of taking it] Okay, if you hand it right over, I won't press charges Greg Brady: What are you talking about? . Maureen McCormick, Actress: The Brady Bunch. Maureen Denise McCormick was born on August 5, to Richard and Irene McCormick. The youngest of four children, she has three brothers Michael, Dennis and Kevin. Her acting career began at age six when she won the Baby Miss San Fernando Valley contest, which opened up the .