William then spent nearly a year in Ireland, administering his father's estates. When he returned, in 1670, he found his Quaker brethren in greater trouble than before. In that perilous season of plots and rumors of plots, when Protestants lived in dread of Roman Catholics, and Churchmen knew not at what moment the Puritans might again repeat the tragedies of the Commonwealth, neither church nor state dared to take risks. The reigns of Mary and of Cromwell were so recent an experience, the Papists and the Presbyterians were so many and so hostile, that it seemed unsafe to permit the assembling of persons concerning whose intentions there could be any doubt. Any company might undertake a conspiracy. The result of this feeling on the part of both the civil and the ecclesiastical authorities was a series of ordinances, reasonable enough under the circumstances, and perhaps necessary, but which made life hard for such stout and frank dissenters as the Quakers. At the time of Penn's return from Ireland, it had been determined to enforce the Conventicle Act, which prohibited all religious meetings except those of the Church of England. There was, therefore, a general arresting of these suspicious friends of Penn's. In the middle of the summer Penn himself was arrested. The young preacher had gone to a meeting-house of the Quakers in Gracechurch or Gracious Street, in London, and had found the door shut, and a file of soldiers barring the way. The congregation thereupon held a meeting in the street, keeping their customary silence until some one should be moved to speak. It was not long before the spirit moved Penn. He was immediately arrested, and William Mead, a linen draper, with him, and the two were brought before the mayor. The charge was that they "unlawfully and tumultuously did assemble and congregate themselves together to the disturbance of the king's peace and to the great terror and disturbance of many of his liege people and subjects." They were committed as rioters and sent to await trial at the sign of the Black Dog, in Newgate Market.