Родилась: 3 June 1930 (Albany, New York, United States)
Дата смерти: 25 September 1999 (Berkeley, California, United States)

Marion Eleanor Zimmer Bradley  was an American author of fantasy, historical fantasy, science fiction, and science fantasy novels, and is best known for the Arthurian fiction novel The Mists of Avalon, and the Darkover series. Many critics have noted a feminist perspective in her writing. She co-founded a spiritual organization, the Center for Non-Traditional Religion. Her popularity has been posthumously marred by accusations against her, and her then-husband the convicted sex offender Walter H. Breen, of child sexual abuse by her daughter Moira Greyland, among others. Zimmer Bradley's first child, David R. Bradley, and her brother, Paul Edwin Zimmer, also became published science fiction and fantasy authors.

Born on a farm in Albany, New York, during the Great Depression, she began writing in 1947. She was married to Robert Alden Bradley from October 26, 1949 until their divorce on May 19, 1964. They had a son, David Robert Bradley (1950–2008). During the 1950s she was introduced to the cultural and campaigning lesbian group the Daughters of Bilitis.   After her divorce Bradley married numismatist Walter H. Breen on June 3, 1964. They had a daughter, Moira Greyland, who is a professional harpist and singer, and a son, Mark Greyland.   In 1965, Bradley graduated with a Bachelor of Arts degree from Hardin-Simmons University in Abilene, Texas. Afterward, she moved to Berkeley, California, to pursue graduate studies at the University of California, Berkeley between 1965 and 1967. In 1966, she helped found and named the Society for Creative Anachronism and was involved in developing several local groups, some in New York after her move to Staten Island.   Bradley and Breen separated in 1979 but remained married, and continued a business relationship and lived on the same street for over a decade. They officially divorced on May 9, 1990, the year Breen was arrested on child molestation charges after a 13-year-old boy reported that Breen had been molesting him for four years. She had edited Breen's book Greek Love, which was dedicated to her, and in 1965 had contributed an article, "Feminine Equivalents of Greek Love in Modern Literature", to Breen's journal The International Journal of Greek Love. She had known about Breen's sexual interests and previously accepted his sexual abuse of a 14-year-old boy.