Anglo-Saxon Institutions. 449-1066 63 In its penitential system, the church had a power, of a semi-judicial character, a restraining influence, in matters of morals, over both clergy and laity.x Monasticism was an important institution in England, as elsewhere in the early church. As we have seen, Eng- land was Christianised largely by monks, and, in very early times, monastic establishments were the chief cen- tres of Christian influence. About a dozen houses were founded rather early in the seventh century, East Anglia being a leader in this movement. The rule of St. Benedict was introduced by Wilfrith in Theodore's time, but it never became universal in Anglo-Saxon monasticism. In fact, there was from the beginning too much irregularity in the English system to ensure a long period of purity and usefulness. Its decline became marked in the eighth century; Bede speaks of it very early in that century. But in the first flush of enthusiasm, when many men and women of the nobility, and even of the princely families, aided in founding monasteries and actually entered and managed them (a source of corruption in the course of time), there was a short period during which the good far outweighed the evil. At this time, indeed, the whole Anglo-Saxon church, and especially that of Northumber- land, stood for greater sanctity and learning than was to be found elsewhere in Christendom, with the possible exception of Ireland. The Danish conquests of the ninth century threw large parts of England back into heathenism.2 Pour or five dioceses ceased to exist, and several were, for some time, in a precarious and unsettled condition. The province of York, of course, suffered most; and, even when the newly settled regions had been reclaimed to Christianity, 1 It should be remembered also that bishops or abbots who had received grants of bookland had, over the people on the land, that kind of jurisdic- tion that has been described above, pp. 40, 41. 2 Even in the time of Cnute, Denmark and Scandinavia were largely heathen. Sweyn had been baptised, but was no Christian. Cnute was nominally a Christian, probably before his conquest. Sweden was prac- tically heathen for some time after. In Norway, the two religions were battling for supremacy in the eleventh century.