The Shepherd of Hermes talks of escaping the tribulation.
287AD an early manuscript found in Egypt speaks to escaping the apocalypse.
AD 387 The PseudoEphraem Sermon taught the pre-trib (authenticity is in question by some)
1304 Brother Dolcino talks of the Rapture
1674 Thomas Collier addressed the pre-trib Rapture
1704 Jon Askel wrote about an 'any moment Rapture' of the church of believers
The notions are not new. The notions were revived in the 1800s as covenant theology sought to untangle the sacriptures which featured Israel in the end times. They did not have our hindsight of seeing the nation remade in 1947 and taking the Temple Mount in 1967. Replacement theology is a fabrication poorly fitted tot he Truths of the Bible.
I would suggest you stick to the scripture, my friend, not that it will help you either, but history is the last place you should be going to try and prove a pretrib rapture.
There is a mountain of evidence for a singular second coming (post-trib) in the ECF...and you know it. But you dishonestly brush them off with the back of your hand.
The bogus Pseudo-Ephraem being guide, these others you cite, except for the Shepherd of Hermes, are just as bogus.
Go to this link:
http://answersinrevelation.org/on_antichrist.pd
For just a few excerpts from the ECF on this...including the Shepherd of Hermes.
Speaking of which, from the Shepherd:
“Happy ye who endure the great tribulation that is coming on, and happy they who shall not deny their own life. For the Lord hath sworn by His Son, that those who denied their Lord have abandoned their life in despair, for even now these are to deny Him in the days that are coming.”