The formation of the Royal Arch occurred in the same period, developing the Hiramic theme with the rediscovery of the secrets lost with the death of the master builder. The Premier Grand Lodge of England (the "Moderns") remained ambivalent about the new rite, perhaps because a secret password was taken from their own third degree. The Moderns' supporters of the new rite formed their own Grand Chapter, probably in 1765. There is evidence that the official date of 1767 is the result of the alteration of the foundation document, to save Lord Blayney the embarrassment of founding a controversial organisation while he was still the Moderns' Grand Master. The prime mover in the formation of the Grand Chapter was Caledonian Lodge, a lodge of Scottish Masons which had just joined the Moderns from the Ancients, and whose members included William Preston.