You found Béortnoth, last known survivor and now Thane of the ruined Thornhope, wandering half mad outside his city.
'My mind is clearing somewhat, ${PLAYER}, but its only thought is now revenge. I faced a great uruk beside my father, and my last memory of the encounter is the creature striking down the Thane.
'If, while you are searching the ruins, you find yourself face-to-face with this uruk -- Bûrzthrâng by name -- strike him down and bring peace to my father's memory.'
Bûrzthrâng can be found somewhere within the ruins of Thornhope.
Thane Béortnoth has asked you to slay Bûrzthrâng, the uruk who slew his father.
Thane Béortnoth is encamped outside the walls of Thornhope.
You should return to Béortnoth with the tidings that Bûrzthrâng is dead.