The son of Sir Archibald D Dawnay, of London and Cardiff; was educated at University and King's Colleges, London, and at St Thomas's Hospital, and after qualifying directed his attention to ophthalmology. He acted in the following posts: Ophthalmic House Surgeon, St Thomas's Hospital; Clinical Assistant in the Ophthalmic Department of the London Hospital; Anaesthetist to the Royal Ophthalmic Hospital, Moorfields, and to the Western Ophthalmic Hospital; and Ophthalmic Surgeon to the Hounslow Hospital. At the time of his death he was Ophthalmic Surgeon to the Great Northern Central Hospital and the Western Ophthalmic Hospital; Chief Clinical Assistant, Royal Ophthalmic Hospital; Ophthalmic Surgeon to the London Society for Teaching the Blind; Hon Oculist to the Orphan Working School, Haverstock Hill; and Refraction Assistant in the London County Council School Department. He practised at first in Upper Phillimore Place, Kensington, and afterwards at 126 Harley Street. He died at Ealing on November 8th, 1918, from pneumonia following influenza. Publications: "Case of Anophthalmia." - *Trans. Ophthalmol. Soc.*, 1904, xxiv, 304. "Corneal Opacities in Members of the same Family." - *Ibid.*, 1905, xxv, 62. "Corneal Opacities of Unusual Character." - *Ibid.*, 1910, xxx, 79. "Optic Atrophy after Use of Arylarsonates." - *Ibid.*, 247. "Double Third Nerve Palsy due to Acute Poliomyelitis." - *Proc. Roy. Soc. Med.* (Child. Dis. Sect.), 1911, v, 13.