Trevethlan (Vols. 1-3), subtitled A Cornish Story, is a substantial regional romance rooted in the landscapes, customs, legends, and social tensions of Cornwall. Across its three-volume form, William Davy Watson combines the picturesque descriptive manner associated with nineteenth-century local-color fiction with the suspense, emotional reversals, and moral testing of the historical and domestic novel. The work's attention to place is more than scenic: Cornwall's communities, inherited loyalties, and traditions shape the characters' identities and illuminate the pressures produced by class, family, and changing social conditions. Its expansive structure and richly circumstantial narration place it within the Victorian tradition of the "provincial" or regional novel, while its atmosphere also recalls the Gothic romance's fascination with secrecy, ancestry, and threatened inheritance. Watson was a Cornish writer whose intimate knowledge of the county evidently informed the novel's topography and cultural texture. His interest lies not merely in presenting Cornwall as an exotic margin, but in recording a distinctive society and preserving the memory of its habits, speech, beliefs, and historical consciousness. Trevethlan consequently reflects the nineteenth century's broader enthusiasm for antiquarian research, national and regional identity, and fiction grounded in lived communities. This edition will reward readers of Victorian three-decker fiction, regional literature, historical romance, and Cornish cultural history. It offers both the narrative pleasures of an absorbing family saga and a valuable literary document of how Cornwall was imagined, remembered, and represented in the nineteenth century.