Resident of Castro Valley. Passed away at the age of 91. Beloved wife of the late Steven A. Giusto. Devoted mother of Janet Smith, Susan Whent and her husband Murray. Grandmother of Michael Smith and his wife Janet, Janine Smith, Jerrin Morgan and her husband Bo, Steven and Deren Weathers. Great-grandmother of Adrian, Trevin, Haley, Zachary and Nicholas. Gardening was her passion, as were the Oakland A's and the Raiders. Mary was a longtime member of the Castro Village Bowling League. Friends are invited to attend a vigil service on Tuesday March 3rd, in the evening from 6:00-9:00 PM at Guerrero Mortuary, 407 Estudillo Ave., San Leandro. Funeral Mass will be on Wednesday, March 4th, at 10:00 AM, at Our Lady of Grace Church in Castro Valley.