Diane Dale is Justin's grandmother and Pattie's mother. Pattie has Mallette as last name because Diane Dale divorced with Michael Mallette. She remarried with Bruce Dale. She has two children, Chris and Pattie Mallette. Her daughter, Sally was killed at age five, when she was struck by a vehicle while crossing the street.
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Justin Bieber - Channel 955 Concert (Part 2)
7:36