The nickname 'Domesday' may refer to the Biblical Day of Judgement, or 'doomsday' when Christ will return to judge the living and the dead. Just as there will be no appeal on that day against his decisions, so Domesday Book has the final word - there is no appeal beyond it as evidence of legal title to land. For many centuries Domesday was regarded as the authoritative register regarding rightful possession and was used mainly for that purpose. It was called Domesday by 1180. Before that it was known as the Winchester Roll or King's Roll, and sometimes as the Book of the Treasury.