[Steelfish]

Seriously, Petrine authority is exercised based on theology and sound historical and scholarly research, the very same methods of inquiry and authority for selecting the books in Scripture and discarding others. Petrine authority begins and ends all discussion. For those who don’t go pick anyone of the 35,000 cults out there from Mormons to Billy Grahams to David Koresh

Here’s just a “starter” article for you.
http://www.ewtn.com/library/answers/aofmary.htm

[CynicalBear]

And still no infallible proof that the apostles taught the assumption of Mary. All this talk about “Petrine authority” it’s like I’m listening to a Mormon or Muslim.

[caww]

It appears evident, from your link, that the “Emperor decided” to extend this throughout the country...once again revealing the partnership of the church and Rome to create a religion to combat true Christianity at that time.

Here’s a quote from your link:

For a time, the “Memory of Mary” was marked only in Palestine, but then it was extended ...’by the emperor’.... to all the churches of the East.

[CynicalBear]

You need to pick your sites better if propaganda is your goal. The site you sent me to starts with this sentence.

The Assumption is the oldest feast day of Our Lady, but we don't know how it first came to be celebrated.

Solid foundation for the belief right there. The gospel of "it coulda been".

[Iscool]

Seriously, Petrine authority is exercised based on theology and sound historical and scholarly research

There is no research that proves Peter was the head of any church...