Because he was not a medievalist John Strype does not find a place in David Douglas’s classic study of the golden age of English antiquarian scholarship, English Scholars 1660–1730. Yet in terms both of his output and of his influence on the subsequent development of the study of English church history Strype is arguably one of the most important scholars that the age produced. Even to-day, nearly 250 years after his death, the twenty-five volumes of his works in the Clarendon press reissue of the 1820s are still a standard source for the study of English church history in the sixteenth century and it is difficult to open a book dealing with any aspect of the English reformation, which does not have its quota of references to Strype. At the same time, as any one who works on the period knows, Strype’s standing as an ecclesiastical historian is ambiguous. If, on the one hand, he is widely quoted, on the other, he is frequently attacked for his mistakes and his works are notoriously full of pitfalls for the unwary. It is therefore perhaps appropriate, in a volume devoted to ‘the Sources, Materials and Methods of Ecclesiastical History’, to consider, first, what is Strype’s value to-day as a source for the study of the English reformation and, secondly, the question of his reliability as a church historian. The two questions, one should stress, are distinct, although they are not unrelated.