Valperga, or The Life and Adventures of Castruccio, Prince of Lucca is Mary Shelley's ambitious 1823 historical romance, set amid the factional violence of fourteenth-century Italy. Through the rise of the warlord Castruccio Castracani and his fatal entanglement with the principled Countess Euthanasia, Shelley fuses political history, philosophical dialogue, and tragic romance. Written in the wake of Walter Scott's historical fiction yet shaped by radical Romantic concerns, the novel examines liberty, tyranny, gendered virtue, and the moral costs of power. Mary Shelley brought to Valperga a distinctive inheritance: the political idealism of William Godwin, the feminist legacy of Mary Wollstonecraft, and her own experience of exile, bereavement, and intellectual life in Italy. Having endured profound personal losses and witnessed the failures of revolutionary hope, she transformed medieval Italian history into a meditation on private conscience and public ambition. This is an essential work for readers who know Shelley chiefly through Frankenstein. Valperga rewards those interested in women's political writing, Romantic historical fiction, and the ethical imagination of a novelist probing how ideals survive-or perish-within history.