To find this mob in-game, use BACKSPACE to open the World Search window, then enter Samuel Yale in the Search field and click "Search". Remember, the field is case-sensitive and must be entered exactly as shown.
A.K.A. Samantha Yale
Samuel Yale is, at the least, a cross-dresser, and at the most transgender. The group of quests related to him/her is slightly out-of-step for when the game was created, but today? It is positively off-the-planet.