It has been said that the concept of treasure trove in English law dates back to the time of Edward the Confessor ("c." 1003/1004–1066). Under the common law, treasure trove was defined as gold or silver in any form, whether coin, plate (gold or silver vessels or utensils) or bullion (a lump of gold or silver), which had been hidden and rediscovered, and which no person could prove he or she owned. If the person who had hidden the treasure was known or discovered later, it belonged to him or her or persons claiming through him or her such as descendants. To be treasure trove, an object had to be substantially – that is, more than 50% – gold or silver.