It so happened that John Thomas, afterwards the Warden of the Stannaries, but then a boy at Conon's school, taking his gun, contrary to the rules of the school, and going out shooting, unluckily killed the chough. This produced a great outcry, and when he was told that this was Mr. Lemon's favourite bird, he strongly suspected that the least punishment he would receive would be a flogging from his schoolmaster and a hiding as well from Mr. Lemon. But Thomas took courage, went to Mr. Lemon's house, knocked at the door, was admitted to Mr. Lemon, and trembling and in tears confessed what he had done. Mr. Lemon paused a moment, and then said that he was sorry for the poor bird, but freely forgave the little delinquent on account of his candour in acknowledging his fault, and more than that, he promised to keep it a secret, and if it should reach Conon's ears, would intercede for him.
In 1742 he was Sheriff for the county. He became one of the Truro magistrates, and might, had he cared for it, have been elected as a member for one or other of the Cornish boroughs.
He was author of a lucid argument written to Sir Robert Walpole to obtain the withdrawal of a tax levied on coals, and which acted prejudicially on the Cornish mines. The presentation of this memorial is thought to have been instrumental in obtaining for him, from Frederick, Prince of Wales, a grant of all minerals found in Cornwall, with the exception of tin; and the Prince likewise sent him a present of silver plate.
He bought Carclew in 1749, and died at Truro, 25th March, 1760, in the sixty-third year of his life.
He and his wife had one son only, William Lemon, junior, who died some years before his father, leaving two sons and a daughter. The elder, Sir William Lemon, Bart.,[24] represented the county of Cornwall in Parliament during fifty years.
As an instance of the respect paid to the genius, and above all the wealth of Mr. Lemon, the people of Truro are said to have drawn back from their doors and windows as he passed through the street, and the Rev. Samuel Walker, when exhorting children at catechizing to be circumspect in the presence of Almighty God, said: "Only think, dear children, how careful you would be if Mr. Lemon were looking upon you."
Sir William's eldest son, Major William Lemon, shot himself at Princes Street, Hanover Square, London, early in 1799, when a young man of only twenty-five.
The baronetcy is now extinct, and Carclew is the residence and property of Captain W. Tremayne.