First of all, shame on the guy who forgot Sieran. All three mentors were quite memorable.
Second, Trahearne may have not stolen our credit for any action, but he did still the credit for the name of Fort Trinity.
Third, he was a horrible choice for Pact Commander, and someone else should have taken the job (not the PC). Trahearne would make an excellent choice for chief advisor on all things Orr/Zhaitan. He was a scholar, not a military commander. He had the charisma of a bog log too.