Dave Madden Dead ... Reuben Kincaid In 'Partridge Family' Dies At 82

Dave Madden  -- who played "The Partridge Family's" aggravated band manager on the 1970s TV show -- has died after a long illness at age 82 ... TMZ has learned.Madden played Reuben Kincaid on the show ... who was often bedeviled by the antics…

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