The Companions of Jehu, in English translation

Adventure set in 19th century France. According to Wikipedia: "Alexandre Dumas, père (French for "father", akin to 'Senior' in English), born Dumas Davy de la Pailleterie (1802 — 1870) was a French writer, best known for his numerous historical novels of high adventure which have made him one of the most widely read French authors in the world. Many of his novels, including The Count of Monte Cristo, The Three Musketeers, Twenty Years After, and The Vicomte de Bragelonne were serialized. He also wrote plays and magazine articles and was a prolific correspondent.