If I could get rid of one Saint, I might choose Bernard of Clairvaux. Why?
1. The attacks and seeming vendetta on the mind of the period, Peter Abelard.
2. His responsibility for the disastrous Second Crusade.
3. His foreshadowing of the Inquisition, with attacks on Cathars, Henricians, and others.
A nasty man. Europe was on the cusp of something great in the mid 1100s and I feel like he was at the forefront of shutting it down.