YOB: c1761 A.D.
Weapon: Unknown
Status: Dead (Duncan MacLeod, 1996)
Currently a psychiatrist in Le Havre, France, he also served as a psychiatrist in a military hospital during World War I. In early 1996, Sean tried to help his friend Duncan MacLeod after he'd been overwhelmed by Kol Tek's Quickening. Unfortunately, evil Duncan mercilessly killed his friend Sean before anyone could stop him.