There is no surviving record of a charter first establishing the Corporation as a legal body, but the City is regarded as incorporated by prescription, meaning that the law presumes it to have been incorporated because it has for so long been regarded as such (e.g. Magna Carta states that "the City of London shall have/enjoy its ancient liberties"). The City of London Corporation has been granted various special privileges since the Norman Conquest, and the Corporation's first recorded royal charter dates from around 1067, when William the Conqueror granted the citizens of London a charter confirming the rights and privileges that they had enjoyed since the time of Edward the Confessor. Numerous subsequent royal charters over the centuries confirmed and extended the citizens' rights.