Dwight L. Moody was one of the most famous evangelists and reformers of the nineteenth century. After a religious conversion as a young salesman in Boston, Moody began to volunteer as a speaker at his local church. Eventually he moved to Chicago, where he started a Sunday school in a poor neighborhood. As the parents of the Sunday school students became interested in what their children were learning, Moody eventually formed a large urban congregation ministering primarily to the poor and immigrant populations of the city.