Thomas Sydenham, English physician and author (d. 1689)
Thomas Sydenham (10 September 1624 – 29 December 1689) was an English physician. He was the author of Observationes Medicae which became a standard textbook of medicine for two centuries so that he became known as 'The English Hippocrates'. Among his many achievements was the discovery of a disease, Sydenham's chorea, also known as St Vitus' Dance.