sorry, what is called the “pre-trib rapture” was unknown before the 19th century. the Catholic Church ( Latin and Greek ) has always taught Jesus will return once at the end of the world and then it will be Judgement Day. No seven year tribulation period, the article you linked to doesn’t cite any. the tribulation period will be the great falling away or apostasy hitting the Church, look around, evidence abounds!!
Then we must agree to disagree.
Todd Strandberg gives the following reference on http://www.raptureready.com/:
Epharaem the Syrian said, in 373 AD, “For all the saints and Elect of God are gathered, prior to the tribulation that is to come, and are taken to the Lord lest they see the confusion that is to overwhelm the world because of our sins.”
Whether you agree with the idea or not, it is still not a new one.