Gellana Mirrorshade is the wife of Bentley Mirrorshade and a Cleric of Garl Glittergold. She runs the Temple of Wisdom at the Friendly Arm Inn. If you bring Samuel to her on time in quest Samuel and Lena, she will reward you a potion of heroism and an elixir of health, along with 500 exp and +1 to party's Reputation. These rewards can also be pickpocketed without completing the quest.