Mary Valastro's birth name is Mary Tubito.
Buddy Valastro's birth name is Bartolo Valastro.
Grace Faugno's birth name is Grace Valastro.
Mary Valastro Pinto
No, Mary Valastro does is alive as of 11/2014. She does suffer from ALS, though.
Italy
Mary MacLaren's birth name is Mary MacDonald.
Mary LaRusso's birth name is Mary Geertson.
Mary Spargo's birth name is Mary Hadshead.
Mary Sharpe's birth name is Mary Futral.
Mary Ruby's birth name is Mary Orkin.
Mary Ritts's birth name is Mary Donnelly.
Mary Kaye's birth name is Mary Ka'aihue.