One of the earliest attempts at solidifying a Christian canon or list of books was made by Marcion of Sinope (85-160 CE).  He rejected the Hebrew Scriptures, so that other Christian leaders denounced him.  Thus, he was excommunicated from the proto-orthodox Christian Church community.  However, he was the first to publish his own list of New Testament books around the year 140 CE, that included 10 letters of Paul and the Gospel of Luke.