Marion Zimmer was born in Albany, NY, on June 3, 1930, and married Robert Alden Bradley in 1949. Mrs. Bradley received her B.A. in 1964 from Hardin Simmons University in Abilene, Texas, then did graduate work at the University of California, Berkeley, from 1965-67.

She was a science fiction/fantasy fan from her middle teens, but wrote only for school magazines and fanzines until 1952, when she sold her first professional short story to VORTEX SCIENCE FICTION. She wrote everything from science fiction to Gothics, but is probably best known for her Darkover novels.

In addition to her novels, Mrs. Bradley edited many magazines, amateur and professional, including Marion Zimmer Bradley's FANTASY Magazine, which she started in 1988. She also edited an annual anthology called SWORD AND SORCERESS for DAW Books.

Over the years she turned more to fantasy; THE HOUSE BETWEEN THE WORLDS was "fantasy undiluted." She wrote a best-selling novel of the women in the Arthurian legends--Morgan Le Fay, the Lady of the Lake, and others--entitled MISTS OF AVALON, and she also wrote THE FIREBRAND, a novel about the women of the Trojan War. Her historical fantasy novels, THE FOREST HOUSE and LADY OF AVALON are prequels to MISTS OF AVALON.

She died in Berkeley, California on September 25, 1999, four days after suffering a major heart attack. She was survived by her brother, Leslie Zimmer; her sons, David Bradley and Mark Greyland; her daughter, Moira Greyland; and her grandchildren.