His original description incorrectly showed trisomy seventeen.
John Hilton Edwards (26 March 1928 – 11 October 2007) was a British medical geneticist. Edwards reported the first description of a syndrome of multiple congenitalmalformations associated the presence of an extra chromosome. The extra chromosome belonged to the E group of chromosomes which consisted of chromosomes 16, 17 and 18. The condition is now known as Edwards syndrome or trisomy 18 syndrome.