John William Mellor was a lawyer and later judge. He was one of the eight sons of the judge Sir John Mellor (1909-1887) and Elizabeth Cooke, the only daughter of William Moseley of Peckham, Surrey. His brother James Robert became Master of the Crown Office.
J. W. Mellor was a Queen's Counsel, a member of the Privy Council and Judge Advocate-General from 1880 to 1885. He was also the Chairman of Committees in the House of Commons in 1893.
In 1878 when Mellor was a Queen's Counsel, he was involved in the Whistler v. Ruskin libel trial (#12056).
J. A. H., 'Sir John Mellor', 1894, Dictionary of National Biography Online, Oxford, 1997 (accessed 24 October 2003).