Semper eadem [electronic resource] : or, Great Britain's assurance of an honourable peace. With the reasons of it. In a letter to a friend. Wherein is incerted, I. The French King's Letter to the Elector of Brandenburgh. II. A brief Account of the French King's Methods to destroy his Protestant Subjects. III. A Profession of the Romish Faith, which the Protestants were enforc'd to make and subscribe. IV. A Specimen of the French King's cruel Usage of the Protestants. V. The Pope's Letter to the French King, congratulating him for abolishing the Edict of Nants. By a lover of his Queen, and country.