It was, possibly, this loss which prompted the Common Council to consider the question of raising a sum of money (the Corporation itself contributing £10,000) for the purpose of presenting the king with a man-of-war, to be called the "City of London." It will be remembered that in 1665, when the ship "London" suddenly blew up on her way up to the Hope from Chatham, the City made good the loss then sustained by the navy. It was proposed now to follow the precedent then set, but after several adjournments the proposal was allowed to drop.[509] [Sidenote: The relief of Gibraltar, Sept., 1782.] In September Lord Howe set sail to relieve Gibraltar, which had endured a siege of three years and more. It was defended by General Elliot, afterwards raised to the peerage as Lord Heathfield, and the sufferings of the garrison had at times been terrible. When Shelburne succeeded to the premiership, on the death of Rockingham in July, negotiations for a peace with America and her allies were far advanced, but before a peace was signed France and Spain were anxious above all things to regain Gibraltar. Accordingly on the 13th September a tremendous attack was made on the fortress by the combined fleets. The forts replied with red hot shot, and eventually succeeded in destroying the floating batteries. Just when these were silenced Lord Howe appeared in the bay, and the combined fleet, not venturing to attack him, withdrew. The siege had attracted the eyes of all Europe, and in February (1783) the Common Council appointed a committee to consider the most suitable mode to be adopted by the City to express their respect to Elliot and Howe and the officers of the army and navy employed in "the glorious defence and relief of Gibraltar." [Sidenote: Copley's picture at the Guildhall.] Two artists were consulted on the matter, namely, West and Copley. The former was of opinion that it would be better to have two pictures instead of one, inasmuch as the defence of the Rock by Elliot and the relief by Howe were two distinct subjects. Copley, on the other hand, thought that both subjects could be treated in one picture of sufficient size to fill one of the side windows of the Common Council Chamber. The cost of such a picture he estimated at £1,500, but rather than lose the commission he was prepared to paint it for 1,000 guineas. His offer was in course of time accepted,[510] and his picture now adorns one entire wall of the Guildhall Art Gallery.[511] [Sidenote: The Peace of Paris, 3 Sept., 1783.]