There has been a system of registration of documents relating to unregistered land (land which is not registered in Land Registry) since 1708. Under this system a written summary of the relevant document is lodged in the Registry of Deeds with the original document. This summary, known as a "Memorial", is retained in the Registry and the original document is returned to the person who lodged it.
Any person may search the Registry’s Index of Names to obtain details of any particular transaction. The Registry does not guarantee that any document registered is valid or has any legal effect; it merely records the document’s existence and its priority date.