In the category of Catholicism (what else!) for $800, the clue is:
This bishop and martyr (stabbed after an attempt to burn him at the stake failed) was a convert who is reputed to have been a disciple of St. John. Critics call him "unoriginal" for his simple style. Met with the Pope about the proper date to celebrate a particular "holiday."
St. Alexander says to place your answer in the form of a question in the com box, and continue to pray some Hail Marys until the answer is revealed.
NB: Winners are responsible for any taxes from winning the Grand Prize -- having the satisfaction that they are a brainiac or at least they know how to use the internet sufficiently well to find the answer.