The Privy Seal of England originally served to authenticate the king's personal communication and can be traced back to the reign of King John in the early thirteenth century. While the Great Seal was required to remain in Chancery, the Privy Seal travelled with the sovereign. However, during the second half of King Edward III's reign, in the mid-fourteenth century, the Office of the Privy Seal took on various additional government roles. This led to the development of a third seal, known at first as the "secret" seal, to handle the private communication that had been the original remit of the Privy Seal.