Peggy Glanville-Hicks’s opera Nausicaa (1961) is her most substantial work. Based on Robert Graves’s novel Homer’s Daughter, in which the author explores Samuel Butler’s contention that Homer’s Odyssey was written by a princess living in ancient Sicily after the Trojan War, the opera was premiered and recorded in Athens in 1961 and attracted widespread international interest. This thesis examines the authorship of the libretti, the composition of the opera and the circumstances and reception of the opera’s Athens performance, and is supplemented by computerised, extensively annotated performance editions of the piano-vocal score and the full score.