Years later, the founders of Plymouth became known to history as the Pilgrims, because they were religious people who traveled long distances to find a place where they could live and worship as they wanted.
someone who adheres to strict religious principles
The migration to Massachusetts Bay during the 1630s was led by a religious group known as the Puritans. Unlike the Pilgrims, the Puritans did not want to separate entirely from the Church of England.
To make sure Maryland continued to grow, Lord Baltimore welcomed Protestants as well as Catholics to the colony. Later, Lord Baltimore came to fear that the Protestants might try to deprive Catholics of their right to worship freely.