 The mother-house, the only surviving member of the congregation, was affiliated to the Cassinese Congregation of the Primitive Observance in 1879.The community at Monte Vergine retains the white colour of the habit, which is in other respects like that of the black Benedictines.There are said to have been some 50 Williamite nunneries, of which only two survived at the beginning of the eighteenth century.