William Pitt the Younger (1759-1806), Prime Minister, whose signature is on a Treasury warrant touching the Isle of Man.

Peter John Heywood, writing to the Duke of Atholl from the Nunnery at the end of September 1786, passed on what Richard Betham had told him about a commission then issuing for the Island. Betham said the commission was by warrant from the Treasury, signed by Mr Pitt, the Marquis of Graham and another of the Lords Commissioners of that board, but that he did not recollect or believe that the Royal Sign Manual had been affixed to it, and thought that in the circumstances it could not have been. Heywood was at the same time waiting to be served with the Lieutenant-Governor's decree respecting the coins.

His administrations carried the ordinary business of the Island through the years after the Revestment, including the continuing negotiation with the Atholl family over what they still held.