The Ghost of Grania O'Malley is a novel by Michael Morpurgo that connects a modern protagonist with a historical figure from Irish legend. The protagonist, a young girl, finds herself involved in a mystery or adventure tied to the legendary Irish pirate queen, Grace O'Malley (Gráinne Mhaol). The "Ghost" suggests a mystery, perhaps a long-hidden treasure, or a spiritual connection that compels the modern character to act courageously. The story is a tribute to Irish folklore and the themes of bravery, female independence, and the pull of history on the present day.