T. M. (Thomas Michael) Greenhow

Thomas Michael Greenhow was an English surgeon and epidemiologist who lived from 1792 to 1881. He trained at Guy's and St Thomas' Hospitals in London and went on to build a long medical career in Newcastle upon Tyne, where he became an important local figure in hospital and medical education.

He is especially remembered for his work during the cholera epidemics of the early Victorian period. His 1832 book on cholera in Newcastle and Gateshead shows how closely he observed the disease and how seriously he took public health. Sources also credit him with helping to found Newcastle's Eye Infirmary and later the medical school that became part of Newcastle University.

Greenhow also wrote other medical works, including surgical and case-based studies, and his influence continued through his family. His daughter Frances Lupton became a notable education reformer, and the wider Greenhow family included several physicians and public figures.