Nothing need be said in this place about John Carteret, Lord Carteret, himself, nor more about his work in Sweden than to set down the sequence of its successes. He procured the signature of a preliminary convention, by which the Swedes consented to give up Bremen and Verden to Hanover, on 11/22 July 1719, when he had been at Stockholm but eleven days. A second preliminary convention, with Great Britain, followed on 18/29 August, when Sir John Norris had at last been allowed to take his squadron forward into Swedish waters. The first separate article of this guaranteed the Hanoverian convention, the second obliged Sweden to sell Stettin and its district to Prussia. Final treaties were signed with Hanover on 9/20 November 1719 and with Great Britain on 21 January/1 February 1720, on which date also Carteret and his French colleague, Jacques de Campredon, signed as mediators a treaty with Prussia, the Prussian envoy, Knyphausen, declining to commit his master to pay for his acquisitions twice as much as George I was to pay for Bremen and Verden. However Frederick William I, caught in a good temper, accepted the treaty three weeks later. Last, and most difficult of all, came the treaty with Denmark, accomplished on 22 June/3 July 1720.