So Christians came to know this 1,600 years after the Catholic church was founded by Christ????
FRiend, you can keep repeating that lie as much as you wish. It is still not anywhere near the truth.
Christ came to redeem sinners, not to start a "cult". The Roman Catholic religious cult does not conform with Scripture, much less contain the wholeness of Christ's church. The church is made up of believers, not blind followers of men.
The age of your group has no bearing on veracity or it's foundation. It is based on lies, superstition, and pagan practices.
Sorry, you are not a winner!