Brigham, in Field, III., pp. 65181; and Richman, in A Study in Separatism, pp. 353-85.
The story of the many attempts made in the interval by " forward " or advanced Puritans to secure vital religious fellowship within the queen's Church, and of the few cases in which these shaded off into practical Separatism, is still wrapped in some obscurity.
After the execution of Greenwood, Barrow and the ex-Puritan Penry (a recent recruit to Separatism), in the spring of 1593, it seemed to some that Separatism was " in effect extinguished."
Separatism was now passing into Congregationalism, 2 both in sentiment and in language.
This comes out in the writings both of Robinson and of Henry Jacob, both of whom passed gradually from Puritanism to Separatism at a time when the silencing of some 300 Puritan clergy by the Canons of 1604, and the exercise of the royal supremacy under Archbishop Bancroft, brought these " brethren of the Second Separation " into closer relations with the earlier Separatists.