The settlers of Plymouth Colony fit broadly into three categories: "Pilgrims", "Strangers", and "Particulars". The Pilgrims were a Puritan group who closely followed the teachings of John Calvin, like the later founders of Massachusetts Bay Colony to the north. (The difference was that the Massachusetts Bay Puritans hoped to reform the Anglican church from within, whereas the Pilgrims saw it as a morally defunct organization and removed themselves from it.) The name "Pilgrims" was actually not used by the settlers themselves. William Bradford used the term to describe the group, but he was using it generically to define them as travelers on a religious mission. The Pilgrims referred to themselves as the "Saints", "First Comers", "Ancient Brethren", or "Ancient Men". They used such terms to indicate their place as God's elect, as they subscribed to the Calvinist belief in predestination. "The First Comers" was a term more loosely used in their day to refer to any of the Mayflower passengers. There were also a number of indentured servants among the colonists. Indentured servants were mostly poor children whose families were receiving church relief and "homeless waifs from the streets of London sent as laborers".