Bradley created a Free Amazon in one of the first Darkover stories, but her full development of the Amazon theme did not occur until The Shattered Chain (1978); The Ruins of Isis (1978) provides archaeological underpinnings for a matriarchal society. The City of Sorcery (1984; see separate entry) extends this theme as Magdalene Lome undertakes a female version of the traditional Quest. The Amazon theme is also prominent in Bradley's historical fiction, such as The Firebrand (1987; see separate entry), where the Trojan Princess Kassandra is trained as an Amazon warrior.