The author of El amante Liberal sets the plot in times of the territorial conflict between Christians and Ottomans, the characters know well the legislations of both peoples and deal with them to achieve the desired end to their adventures, that is, marriage. The interpretation and combination of these legal and social rules represent an unknown aspect to the reader of our times. In this article I will analyze the key factors that both societies impose around the marital question. This objective demands a study of Muslim laws, canons of Council of Trent and manuals about good behavior written by who is considered to be the important humanist of Spain’s Golden Age.