Leonard (1606–1647), as first colonial governor, and as a Roman Catholic continued the legacy of his father by promoting religious tolerance in the colony. He governed Maryland for forty-two years, though he never visited his colony in person. In 1649, the General Assembly of Maryland, the decade-old colonial legislature passed the Maryland Toleration Act, also known as the "Act Concerning Religion, a law mandating religious tolerance for trinitarian Christians". Passed on September 21, 1649 by the Assembly of the Maryland colony, it was the first law requiring religious tolerance in the British North American colonies. The Calvert family sought enactment of the law to protect Catholic and other Trinitarian Christians who did not conform to the established Church of England. Religious toleration lasted for approximately 40 years until it was revoked during the Protestant Revolution of 1689. From 1689 until 1776, Maryland was officially Anglican. Arrival in Maryland Charles Calvert sailed to Maryland in 1661 as a young man of 24, becoming the first of the Barons Baltimore to take personal charge of the colony. He was appointed deputy governor by his father and, when Cecil Calvert died in 1675, Charles inherited Maryland, becoming governor in his own right. Some time before 1666 he was married to Mary Darnall, daughter of Ralph Darnall, and the first of Calvert's four wives. The Darnall family were wealthy Maryland planters, and also Roman Catholics. Tragically, Mary did not live long; she died in childbirth sometime before 1667. Charles was not slow to find a new bride. In 1667, he was married a second time, to Jane Lowe (1644–1693/4), the widow of Colonel Henry Sewall of St Mary's County, Maryland, daughter of Vincent Lowe and his wife Anne Cavendish. In late 1667 or early 1668, they had a son, Cecil. Economic problems Calvert's life as governor was aggravated by growing economic problems. From the 1660s onwards, the price of tobacco, the staple crop of Maryland and its chief source of export income, began a long slide, causing economic hardship especially among the poor. In 1666 neighbouring Virginia proposed a "stint" on tobacco growing, a one-year moratorium that would lower supply and so drive up prices. Calvert initially agreed to this plan but came to realize that the burden of the stint would fall chiefly upon his poorest subjects, who comprised "the generality of the province". Eventually he vetoed the bill, much to the disgust