Proteus wrote:
From Reply No. 24, "ABOUT MARCION," on the "First Century GT origins" thread:

Marcion was the first to propose a New Testament canon. His canon consisted of only eleven books grouped into two sections: the Evangelikon, being a version of the Gospel of Luke, and the Apostolikon, a selection of ten letters of Paul the Apostle who Marcion considered the correct interpreter and transmitter of Jesus' teachings.

Marcion's dates being ca. 85-160 C.E., this also makes those letters first-century works.
Referencing Marcion actually goes against the idea of a "real" Jesus. 

For one thing, he never wrote of a human Jesus.  Actually he never spoke of Jesus at all -- he wrote of Isu Chrestos who was a god (ghost).

He also thought that the G-d of the Jewish bible was NOT the same as Jesus (so much for the Trinity).   To Marcion the Jewish G-d was evil!

If one removes the pre-conception that he was an "early Christian" and stop to think that he invented a new religion with a new god (Isu Chrestos) and that this religion morphed by church fathers into Christianity with Jesus, trinities, etc. at a later time one actually has an even stronger argument that there was no "real" (human) Jesus prototype -- just various pagan religions that were mashed together to eventually create Christianity. . .

סופי

And everything that Sarah tells you, listen to her voice. Bereshit (Genesis) 21:12