Locus Online is reporting that SFWA Grand Master Anne McCaffery died at home in Ireland of a massive stroke on November 21, 2011.  She was 85.  McCaffery was author of the long-running Pern series.  In addition to Pern, McCaffery was the author of a number of other series, which she often co-wrote with up and coming authors who went on to have significant careers.  These authors include, but are not limited to, Jody Lynne Nye, Elizabeth Moon, Elizabeth Anne Scarborough, and Mercedes Lackey.  McCaffery won a number of awards for her work, including the Nebula and Hugo (she was the first woman to win both).  In 2006 she was inducted into the Science Fiction Hall of Fame.