Born on 9 October 1871 at Thaxted, Essex the younger son of George Samuel Watson MRCS 1865, his mother being a daughter of Charles Trustram MRCS 1831, who died on 25 June 1872 and to whose family practice at Tunbridge Wells G S Watson succeeded. G T Watson was educated at Tonbridge School, was a scholar of Peterhouse, Cambridge and took first-class honours in the Natural Sciences Tripos 1893. He entered St George's Hospital Medical School with the first University scholarship in 1894, and after qualifying in 1897 served the Hospital as house surgeon, house physician, and assistant in the ear, eye, dental, and skin departments. After a year in practice at Hastings in 1900, he joined his father and elder brother Charles Robert Watson MD, MRCS at Tunbridge Wells. His father died in 1903 and his brother in 1920. During the war of 1914-18 he served in the RAMC at the Herbert Hospital, Woolwich and was assistant county director of the British Red Cross Society for Kent. He was awarded the OBE in 1920 for his services. Watson was surgeon to the Kent and Sussex Hospital and consulting surgeon to the Tunbridge Wells and District Hospital. He practised at 2 Royal Chase, but retired in 1936 to Heathside, 75 Mount Ephraim, Tunbridge Wells and continued to see his old patients privately. Watson married in 1901 Dorothy Rankin, who survived him with two married daughters. He died suddenly at his home on 6 December 1952 aged 81, the last of five generations of the families of Trustram and Watson who practised at Tunbridge Wells. The funeral service was at the Church of King Charles the Martyr. He had been a devout churchman and a leading citizen, respected for his integrity, wisdom, and friendliness.