Both the Duchy of Cornwall and the Duchy of Lancaster—since 1399 held by the monarch in a personal capacity—have special legal rights not available to other landed estates: for example, the rules on "bona vacantia", the right to ownerless property, operate in favour of the holders of the duchies rather than the Crown, such that the property of anyone who dies in the county of Cornwall without a will or identifiable heirs, and assets belonging to dissolved companies whose registered office was in Cornwall, pass to the duchy.