Definitions of nonconformist:

• noun:   someone who refuses to conform to established standards of conduct
• noun:   a Protestant in England who is not a member of the Church of England
• adjective:   not conforming to some norm or socially approved pattern of behavior or thought

  Example: "The old stubborn nonconformist spirit of the early settlers"

• adjective:   not conforming to established customs or doctrines especially in religion