The last person to be hanged at this castle (Willian Clarke alias Slenderman) was hanged in March 1877 and his grave with its footstone can be viewed by a personal visit (his trial record, etc., can be viewed at web site [www.ndstory.com/murder]). There are other murderers graves in the "Lucy Keep" with footstones, but because of World War II solders using records to start a fire, not all the occupants of the graves are known.