Seignory in the context of "Escheat"

A lord of the manor, in Anglo-Saxon England and Norman England, is the landholder of a rural estate. The titles date to the English feudal (specifically baronial) system. The lord enjoyed manorial rights (the rights to establish and occupy a residence, known as the manor house and demesne) as well as seignory, the right to grant or draw benefit from the estate (for example, as a landlord). The title is not a peerage or title of upper nobility (although the holder could also be a peer) but was a relationship to land and how it could be used and those living on the land (tenants) may be deployed, and the broad estate and its inhabitants administered. The title continues in modern England and Wales as a legally recognised form of property that can be held independently of its historical rights. It may belong entirely to one person or be a moiety shared with other people. The title is known as Breyr in Welsh.

In the British Crown Dependencies of Jersey and Guernsey the equivalent title is Seigneur.