The Money Moon by Jeffery Farnol

According to Wikipedia: "John Jeffery Farnol (10 February 1878 – 9 August 1952), was an English author, known for his many romantic novels, some formulaic and set in the English Regency period, and swashbucklers. He with Georgette Heyer founded the Regency romantic genre... The success of his early novels led Farnol to become a professional writer; he returned to England around 1910, and settled on the south coast. He produced around 40 novels and volumes of stories, and some non-fiction and children's books."