Once upon a time, a troupe of foreign constables chased a beast all the way to Yharman, and this is what they wore. The constables became victims of the beast, except for one survivor, who in turn devoured the creature whole, all by himself.
This fable is a favorite among Yharnamites, who are partial to any stories of pompous, intolerant foreigners who suffer for their ignorance. It makes the blood taste that much sweeter.
Using the shortcut from the first lamp, walk straight down the stairs and to the right. Found on a dead body guarded by three Bloodlickers.