The following paper will give a preliminary statement of a new conjecture as to the origin of the Ancren Biwle. It is proposed to identify the three maidens for whom the treatise was composed with the “tribus puellis, Emmae, videlicet, et Gunildae et Cristinae,” to whom, according to the charter printed by Dugdale, the hermitage of Kilburn, with its appurtenances, was granted by the Abbot and convent of Westminster sometime between the years 1127 and 1135. The hermitage was endowed permanently with money, land and beneficia, in return for which the inmates were to be the beadsmen of the abbey and of its confederate, the Abbey of Fécamp. The house at Kilburn was to be under the protection of St. Peter's, but it was to have complete independence in regard to its internal affairs. The establishment thus made had a continuous existence till the Reformation, under the title, which it seems to have acquired very early, of “Kilburn Priory.”