John Sadler, the inventor of this important art, was the son of Adam Sadler, a favourite soldier of the great Duke of Marlborough, and was out with that general in the war in the Low Countries. While there, he lodged in the house of a printer, and thus obtained an insight into the art of printing. On returning to England, on the accession of George I., he left the army in disgust and retired to Ulverstone, where he married a Miss Bibby, who numbered among her acquaintance the daughters of the Earl of Sefton. Through the influence of these ladies he removed to Melling, and afterwards leased a house at Aintree. In this lease he is styled “Adam Sadler, of Melling, gentleman.” The taste he had acquired in the Low Countries abiding with him, he shortly afterwards, however, removed to the New Market, Liverpool, where he printed a great number of books--among which, being himself an excellent musician, one called “The Muses’ Delight” was with him an especial favourite. His son, John Sadler, having learned the art of engraving, on the termination of his apprenticeship bought a house from his father, in Harrington Street, for the nominal sum of five shillings, and in that house, in 1748, commenced business on his own account. Here he married a Miss Elizabeth Parker, daughter of Mr. Parker, watchmaker, of Seel Street, and soon afterwards became engaged in litigation. Having got together a good business, his fellow townsmen became jealous of his success, and the corporation attempted to remove him as not being a freeman of Liverpool, and therefore having no right to keep a shop within its boundaries. Disregarding the order of removal, the corporation commenced an action against him, which he successfully defended, and showed that the authorities possessed no power of ejection. This decision was one of great importance to the trading community, and opened the door to numberless people who commenced business in the town.