Anthony Neville Gordon Clark (“Tony”) was married to Charlotte Platts, whom he met while she was nursing his friend at Leeds General Infirmary. He was called up for national service with the Royal Air Force and spent some time in Aden, where he wrote his MD thesis on prickly heat. On demobilisation he worked at St James's Hospital, Leeds, before taking up a consultant's post in Stoke on Trent. He left Stoke to set up a new department of geriatric medicine in Brighton.
He was an enthusiastic writer continuing to submit articles well after his retirement .His most well known paper was the description of Diogenes syndrome in the Lancet in 1975 on which he was lead author. Diogenes syndrome became a recognised term for the description of extreme self neglect in the elderly particularly characterised by compulsive hoarding. His plans for travelling after his retirement were brought to an end after a stroke which left him increasingly dependent on Charlotte. He retained his sense of humour, zest for life, and love of practical jokes at least until the death of Charlotte in 2003. He suffered a further massive stroke on 2 April 2006 and died shortly afterwards. He had no children but bestowed affection and encouragement on his nieces and nephews, two of whom are doctors.