Sir Harold Gillies was born in New Zealand but lived most of his mature years in England. He is known as "the father of plastic surgery". He and his wife Kathleen M Gillies née Jackson married in London in 1911 but after the 1911 census was taken. They had 4 children: John Arthur born 18 August 1912 Margaret born 31 January 1915 Joan born 1918 Michael Thomas born 15 September 1920. On the 1939 Register at their home at 59 Frognal, Hampstead (easily found if you search for Kathleen Gillies) the only people listed are Kathleen M Gillies, Daphne Muir* and Mary G Gillies, born 18 March 1912, single, teacher of music. I am fairly certain the 2 redacted entries are for Joan Gillies and Michael Thomas Gillies. I haven't been able to trace Harold Gillies' entry in the Register nor that for Margaret. John Arthur was almost certainly in the RAF or RAAF training to be a pilot. I really don't need to know anything about them at this stage unless they are part of a clue as to who Mary G Gillies is. So, who is Mary G Gillies? Any ideas? * Daphne Muir was not related to the Gillies family but was just a family friend.