In Scotland, a baron or baroness is the head of a feudal barony, also known as a prescriptive barony. This used to be attached to a particular piece of land on which was situated the caput (Latin for "head") or essence of the barony, normally a building, such as a castle or manor house. Accordingly, the owner of the piece of land containing the caput was called a baron or baroness. According to Grant, there were around 350 identifiable local baronies in Scotland by the early fifteenth century and these could mostly be mapped against local parish boundaries. The term baron was in general use from the thirteenth century to describe what would have been known in England as a knight of the shire.