Better watch that date! The Muratorian Canon is widely believed to date back to the late Second Century. To hear Metzger tell it, and he did lean conservative, the gospels, Acts, and Pauline epistles were pretty much universally accepted very early on. The real debate was over books like James, Jude, 2 Peter, Revelation, and a couple of others. The Orthodox Church took forever to formally accept Revelation, and I believe Luther rejected it altogether. If memory serves, the books that were excluded were not so much the Gnostic Gospels as they were books like 1 Clement and the Shepherd of Hermas, and never really gained any significant traction.
I'd love to hear deacdixie chime in, although a new thread may be more appropriate than cluttering up the CT