"Castle Richmond" is a novel by British author Anthony Trollope. The story is set in Ireland and follows the lives of two families, the Desmonds and the Fitzgeralds, who are bound together by a tragic event. The novel begins with the death of Herbert Fitzgerald, the heir to Castle Richmond, the ancestral home of the Fitzgerald family. The Desmonds, who are close friends of the Fitzgeralds, are also affected by this event as their daughter, Clara, was engaged to Herbert. As the story unfolds, it is revealed that Herbert's death was caused by his own father, who had mistakenly thought that his son was having an affair with Clara. This event leads to a series of tragedies and conflicts between the two families, as they struggle to come to terms with their loss and deal with the fallout from this event. The novel provides a poignant portrayal of the social and political climate of Ireland during the 19th century, as well as exploring themes of family, love, and betrayal. It is considered one of Trollope's finest works and a classic of Victorian literature.