John Griffiths (surgeon)
John Griffiths of Erryd was a London medical practitioner and surgeon. His parents were the Reverend John Griffiths, B.A. from Oxford University, and Mary Denham.
Career
Dr Griffiths was appointed surgeon to Queen Charlotte's Household on 28 March 1789, and held this position until her death in 1818. He was also surgeon at St George's Hospital in London from 1796 until 1822.Griffiths was among those who gave evidence to the 1802 Committee of the House of Commons on Dr JENNER'S Petition respecting his Discovery of Vaccine Inoculation against small pox, recently discovered by Edward Jenner. It was reported he testified that he had "inoculated upward to fifteen hundred persons, none of whom has had untoward symptoms, among them three of his own children, at various periods within three years."