Marcia Wallace Dead -- 'Simpsons' Star Dies at 70

Marcia Wallace Dead -- 'Simpsons' Star Dies at 70

Marcia Wallace -- who voiced Edna Krabappel on "The Simpsons" -- died last night in Los Angeles ... TMZ has learned.Marcia's caregiver tells us ... the actress passed away at home with her family by her side.  We're told she had been sick for…

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