Perfect harmony prevailed between the proprietor and the people; and Maryland, attentive to its own affairs, remained in a state of increasing prosperity until the civil war broke out in England. This government, like that of Virginia, was attached to the royal cause; but Clayborne, who took part with the Parliament, found means to intrigue among the people, and to raise an insurrection in the province. Calvert, the governor, was obliged to fly to Virginia for protection; and the insurgents seized the reins of government. After the suppression of this revolt, and the restoration of tranquillity, an act of general pardon and oblivion was passed, from the benefits of which only a few leading individuals were excepted; but this, like most other insurrections, produced additional burdens on the people which did not so soon pass away. A duty, for seven years, of ten shillings on every hundred weight of tobacco exported in Dutch bottoms, was granted to the proprietor; the one-half of which was appropriated to satisfy claims produced by the recovery and defence of the province.[46]
This state of repose was disturbed by the superintending care of Parliament. In September 1651, commissioners were appointed "for reducing and governing the colonies within the bay of Chesapeak." Among them was Clayborne, the evil genius of Maryland. As the proprietor had acknowledged and submitted to the authority of Parliament, he was permitted to govern the colony in the name of "the keepers of the liberties of England;" but could not long retain the possession of actual authority. The distractions of England, having found their way into Maryland, divided the colonists; and the commissioners supported with their countenance, the faction opposed to the established government. The contentions generated by this state of things, at length broke out in a civil war, which terminated in the defeat of the governor and the Roman Catholics. A new assembly was convened, which, being entirely under the influence of the victorious party, passed an act declaring that none who professed the popish religion could be protected in the province by the laws; that such as profess faith in God by Jesus Christ, although dissenting from the doctrine and discipline publicly held forth, should not be restrained from the exercise of their religion, provided such liberty was not extended to popery, or prelacy, or to such as, under the profession of Christ, practise licentiousness. Other laws in the same spirit were enacted; and a persecution was commenced against the Quakers, as well as against those guilty of popery, and prelacy.