The Archduke's Adopted Saint

I was forced to live in captivity for the rest of my life because I happened to be aware of the fact that I was a saint. I was truly a 'real' saint, but that didn’t matter, because there was already a designated saint in the temple. When I died from all the abuse I endured, I was sent back to a time before all those previous events in my life had happened. After fifteen regressions, I was exhausted.