Margaret White (Piper Laurie) is the mother of the main anti-heroine, Carrie White, in the 1976 horror movie Carrie.
In Carrie (1976) Margaret was shown to be very religious and very creepy. Her clothes and her hair were very witch-like and she had a very religious background. Margaret was very evil and very abusive to her daughter Carrie. She locks her in her closet and orders her to pray for forgiveness, when she learns about the shower incident, because she said it was punishment for Eve's Disobiedience (offering Adam the fruit and creating original sin). She also is very mad. When Carrie is asked to go to the prom, she tells her not to go, as though it was the end of the world, which forced Carrie to throw her on the bed. Margaret first discovers Carrie's powers, when she slams all the windows shut trapping her in and Carrie tells her, she is going to the prom. For the mere reason of having telekinesis, she says she is a witch and witches have to die according to God. Margaret then tells Carrie after the Prom massacre at home, that she was raped by Ralph, gains her trust and then stabs Carrie in the back. Margaret then makes a crazy smile, as she follows Carrie downstairs ready to stab her again, as though she was in a sort of mission. Before she has the chance to do it, however, Carrie sends a knife pinning her hand into the wall. She then screams smilingly in pain and then Carrie crucifies Margaret, so that she won´t recover from her attack and continue to try to kill her. While this happens, she always shows this smile. Margaret, after letting out creepy, painful smiling screams, dies. Her death causes Carrie to destroy the house with her and her mother in it dying on the way.