Landen Stilwell

Landen Stilwell was a level 23 human located in a cell to the left of Sorcerer Ashcrombe's own cell — in the dungeon of Shadowfang Keep. He was added as part of the Blood-Tempered Ranseur quest chain for blood elf paladins. He was presumably related to Jordan Stilwell — who himself gave Alliance paladins the quest to collect the components for Verigan's Fist.

He was involved in the quest.

Quest
According to information provided to the Blood Knight Order by the Forsaken, Stilwell—presumably a blacksmith in Baron Silverlaine's service as is Jordan—secretly smuggled a crate of bloodforged ingots into the Keep and hid them in the stables. When Silverlaine was toppled by Archmage Arugal and his worgen, Stilwell was placed in Shadowfang's dungeons. Unless you were a blood elf paladin seeking this quest, he would warn you to stay away from him — he claimed to be cursed. This proved to be true once Stilwell revealed the location of the ingots...he transformed into a worgen himself.

Quotes

 * "Stay away from me, ! There's no telling when the sickness will take me again. Just leave me alone before it happens again."