A Jacobite Exile by G. A. Henty

Historical novel, set in the early 18th century. According to the Preface: Had I attempted to write you an account of the whole of the adventurous career of Charles the Twelfth of Sweden, it would, in itself, have filled a bulky volume, to the exclusion of all other matter; and a youth, who fought at Narva, would have been a middle-aged man at the death of that warlike monarch, before the walls of Frederickshall. I have, therefore, been obliged to confine myself to the first three years of his reign, in which he crushed the army of Russia at Narva, and laid the then powerful republic of Poland prostrate at his feet. In this way, only, could I obtain space for the private adventures and doings of Charlie Carstairs, the hero of the story. According to Wikipedia: George Alfred Henty (8 December 1832 - 16 November 1902), referred to as G. A. Henty, was a prolific English novelist, special correspondent, and Imperialist born in Trumpington, Cambridgeshire, England. He is best known for his historical adventure stories that were popular in the late 19th century. His works include Out on the Pampas (1871), The Young Buglers (1880), With Clive in India (1884) and Wulf the Saxon (1895)