 In English law and its derivatives, "time immemorial" means the same as "time out of mind", "a time before legal history and beyond legal memory".In 1275, by the first Statute of Westminster, the time of memory was limited to the reign of King Richard I, beginning 6 July 1189, the date of the king's accession.Since that date, proof of unbroken possession or use of any right made it unnecessary to establish the original grant under certain circumstances.