Introduction: "Jhesu mercy quod Salthows" "Jhesu mercy quod Salthows" (" 'thanks be to Jesus!' says Salthouse") are the last words of the unique surviving manuscript (now London, British Library Additional MS 61823) of The Book of Margery Kempe. It is an unremarkable and conventional scribal signing-off for the singular account of the remarkable life of Margery Kempe (d. c. 1439). In recent years Kempe's Book has been mined by literary scholars and historians for the information it provides about lay piety, women's devotion, and lifewriting in late medieval England, but "Salthows", the scribe of the unique surviving manuscript of her Book, has been given little attention. In this essay I suggest that Salthouse is an important figure in establishing the circumstances of the Book's reception and early reiteration. Since its rediscovery in 1934 (when the unique manuscript was happened upon in a country-house) the physical manuscript of the Book has received far less attention than its protagonist. 1 This is, perhaps, because the notes of the first critical edition, published in 1940 by the Early English Text Society and edited by Sanford An early rehearsal of some of the ideas in this essay appeared as "The Woman in White," The Times Literary Supplement,