an Entity references as follows:
Cecil John Seddon Purdy AM (27 March 1906 – 6 November 1979), often referred to as "C. J. S. Purdy", was an Australian chess player and writer. He was awarded the titles International Master in 1951 and Grandmaster of correspondence chess in 1959. Purdy was the inaugural world correspondence chess champion. He was also an influential chess magazine writer, editor, and publisher.