Duchy of Lancaster

The Duchy of Lancaster is an estate of the British sovereign. The estate has its origins in the lands held by the medieval Dukes of Lancaster, which came under the direct control of the monarch when Henry Bolingbroke, the then duke of Lancaster, ascended the throne in 1399. In 1461 King Edward IV confirmed that the Duchy would be inherited by the monarch, but held separately from the Crown Estate, the other assets which belong to the monarch.