Ariel Lawhon’s novel profiles the real-life Gráinne Ní Mháille (c. 1530-c. 1603), a powerful chieftain of the O’Malley clan in western Ireland, known in English records and folklore as Grace O’Malley (Chambers, Anne. Granuaile: Grace O’Malley – Ireland’s Pirate Queen. Gill & Macmillan Ltd., 2006). In an era when Gaelic society was strictly patriarchal, O’Malley defied convention by taking command of her family’s shipping enterprise after the death of her father, clan chief Eóghan Dubhdara Ó Máille. She controlled the waters of Clew Bay, amassing a significant fleet and hundreds of fighting men. O’Malley levied taxes on all ships passing through her territory, engaging in trade and piracy that extended as far as Spain. Her power made her a formidable figure in the Tudor court’s efforts to conquer Ireland. 

Despite her regional influence, O’Malley is famously omitted from contemporary Irish accounts like the Annals of the Four Masters, a major chronicle of medieval Irish history. Consequently, much of her story survives through two disparate sources: critical English state papers and celebratory Irish folklore. In many folksongs and tales, O’Malley is often referred to as Gráinne Mhaol or Granuaile, and her legend has evolved to become a representation of Ireland and the spirit of independence.