[polemikos]

It is my view the church slowly digress from the original teachings until the Reformation corrected the situation.

Quite the opposite, actually: See Reply 8 above.

[HarleyD]

This was not a belief that first appeared in the 9th century. It had its roots in the early church and fester for centuries. While you've listed some of those who supported transsubstantiation there were others that felt this was more symbolic.