One day, during the latter half of the eighteenth century, a strange vessel ran on the rocks on the Hayle side of Carrick Gladden, and the crew escaped to land and disappeared. The ship, now a derelict, had apparently no owner, and next day a number of people boarded her, and found her full of chinaware and other smuggled goods. The ship's papers could not be found; they had been carried off when the crew deserted her, and it was strongly supposed that they were destroyed, as implicating Knill and Praed, of Trevetho. The customs officer, Roger Wearne, went on board and stuffed his clothes full of china; having a pair of trousers on with a very ample and baggy seat, he thought he could not do better than stow away some of the choicest pieces of porcelain there. But as he was getting down the side of the ship into the boat, very leisurely, so as not to injure his spoils, a comrade, getting impatient, struck him on the posteriors with the blade of his oar, shouting to him, "Look out sharp, Wearne!" and was startled at the cracking noise that ensued, and the howl of Wearne when the broken splinters of china entered his flesh. In 1773 the Government sent him to Jamaica to inspect the ports there; he remained in the West Indies one year, and used his eyes and ears, for in 1779 he wrote an account of the religion of the Coromandel negroes for Bryant Edwards' _History of the West Indies_, from information he then and there gathered. For his services he received from the Board of Customs the substantial sum of £1500. He returned to his duties at S. Ives in 1774. In 1777 he became private secretary to the Earl of Buckinghamshire, in Dublin, but he returned to S. Ives after six months in Ireland. In 1779 he speculated in a bootless search for treasure, which the notorious pirate, Captain John Avery, was supposed, on his return from Madagascar, to have secreted near the Lizard. But, as none of the Lives of that freebooter gave any hint of his having done so, the attempt was not the least likely to lead to satisfactory results. Davies Gilbert says that Knill equipped some small vessels to act as privateers against smugglers, but if local tradition may be relied on, these vessels were only nominally for this purpose, and were actually engaged in running contraband goods; but this is highly improbable. [Illustration: GLASS INSCRIBED "SUCCESS TO THE EAGLE FRIGATE, JOHN KNILL COMMANDER" _From the Collection of Percy Bate, Esq. of Glasgow_] In 1782 he was employed in the service of the customs as inspector of some of the western ports, making occasional visits to London, where he settled for the rest of his days. In 1784 he purchased chambers in Gray's Inn Square, where he died on March 29th, 1811, at the age of seventy-seven. He was painted by Opie in 1779, dressed in a plain suit of blue, with frilled shirt and ruffles. He made his half-brother, the Rev. John Jope, of S. Cleer, his sole executor.