During the Plundering Time, Protestant pirates robbed Catholic residents of the British colony of Maryland. Because many of the British colonists, such as the Puritans and Congregationalists, were fleeing religious persecution by the Church of England, much of early American religious culture exhibited the more extreme anti-Catholic bias of these Protestant denominations. Monsignor John Tracy Ellis wrote that a "universal anti-Catholic bias was brought to Jamestown in 1607 and vigorously cultivated in all the thirteen colonies from Massachusetts to Georgia." Colonial charters and laws contained specific proscriptions against Roman Catholics. Monsignor Ellis noted that a common hatred of the Roman Catholic Church could unite Anglican clerics and Puritan ministers despite their differences and conflicts.