Rafael Sabatini 
Fortune’s Fool 

London 1665 is no place for Randal Holles, a former soldier in Cromwell’s army, now that the monarchy has been restored and the exploits of the Republicans are being condemned in the highest degree. Holles, desperate for an escape from his hopeless situation and almost certain execution, sees no option but to accept the Duke of Wellington’s rather dubious commission — to abduct a famous actress and bring her before him. However, as events take an unexpected turn, Holles is presented with the opportunity to be reinstated to his former glory. (Goodreads)