 On his return to England, Thomas Fitzpatrick took up a position with St. Bartholomew's Hospital in London and in 1868 he became a member of the Royal College of Physicians.He took up a private practice near Hyde Park, London and was married to Agnes Letitia (née Robinson) in May 1865.Thomas Fitzpatrick died 31 May 1900 aged 68, after which his wife took to publish some of his writings, "Tours and Excursions on the Continent" and established the "Fitzpatrick Lecture", 'a study in the history of medicine' to his memory at the Royal College of Physicians.