[@Lone Wanderer]

Check Sir Tobryn Stormwater's bio, in case I've said anything about Eslen that you're unhappy with. 

Long story short, he was a renowned knight, who fell from grace after attacking a column of refugees that Dagon had disguised as a legion to fool him into killing them. The ploy worked, despite his knights begging him to call off the assault, and the Grand Master exiled him.