Henry Revell Reynolds (1745-1811) was brought up by his maternal great-uncle, Henry Revell, of Gainsborough, Lincolnshire; his father having died only one month after his birth. He was educated at Beverley Grammar School and Lincoln College, Oxford which he entered in 1763. After his great uncle's death he attended Trinity College, Cambridge and also studied in Edinburgh. He finally graduated as a Doctor of Medicine in 1773 and went to practise in Guilford where he married Elizabeth Wilson in 1770. He became a candidate for admittance to the Royal College of Physicians in 1773 and was elected a fellow the next year. He was physician to the Middlesex Hospital from 1773 until 1777, when he moved to St Thomas's Hospital. He resigned in 1783 to persue his private practice.
Reynolds is remembered for his service to King George III. He first treated King George III in 1787 and in 1797 was appointed physician-extraordinary to the king, becoming physician-in-ordinary in 1806. Eventually his own health was broken by the stress of treating the monarch, not least attending long sessions of the House of Lords enquiry and he died at his house in Bedford Square, London in 1811.