(from Martin Luther) is the name which represents the moderate reform of the English Church. Jack (from John Calvin), stands for the fanatical enthusiasts, dissenters, and Presbyterians. Swift, in the Apology, refers to the charge of having borrowed these names from (Villiers) Duke of Buckingham, without much concern. The words of Buckingham are: ' men found no advantage in withdrawing from Father Peter to Father Martin and Father John.' The original suggestion certainly shews no such striking wit as to be worth a quarrel about its ownership.