It will here be a suitable place to notice briefly a peculiar form of vestry which in the sixteenth century was common in the hundred of Amounderness and recognised as "sworn men." Preston, Kirkham, Goosnargh, Poulton, St. Michael's-on-Wyre, Garstang, Lancaster and Ribchester, each had this executive body, though the number varied; but most of the parishes had twenty-four sworn men. The oath taken by these officers was to the effect that they would keep, observe and maintain all ancient customs as far as they agreed with the law of the realm and were for the benefit of the particular parish or chapelry. Their duties were numerous: they levied the rates, elected the parish clerk in some cases, appointed churchwardens, and even laid claim to nominate the vicar, and in a general way they not only looked after the fabric of the church, but regulated its ceremonies and attended to the welfare of the parish. These men were not re-elected annually, as in the case of churchwardens, but, once appointed, they held office for life, unless they left the parish or were disqualified by becoming Nonconformists or other sufficient reason. The best men in the parish often were included in the list, and in many cases sons succeeded fathers for several generations.[205] During the years immediately preceding the Civil Wars, Puritanism had gone on increasing, and at the opening of the Long Parliament, in 1640, it was felt that some change in the form of religious worship had become an absolute necessity to meet the clamorous demands heard on all sides. Lancashire, just as it had for long been a stronghold of Catholicism, now became a centre of Puritanism; and for many years to come the intolerant spirit of both parties helped to retard the progress of free religious thought. Parliament distinctly for some time fostered Puritanism, which ultimately led to the adoption of the Presbyterian form of Church government, which was developed between the years 1643 and 1648. A modern writer[206] truly remarks that, "If Puritanism anywhere had scope to live and act, it was here" (in Lancashire); "if anywhere in England it was actually a force, it was in Lancashire. There is no other part of England that can furnish so complete an illustration of the true spirit of this seventeenth-century Puritanism as it was manifested in actual practice, and it is this that gives such a peculiar value to the records of the religious life of the county during the years 1643-60."