Born at Wye, Kent on 22 August 1861, the second child and eldest son of William Frederick Brook, MRCS 1856, and Jane Darvill, his wife. He was educated at King Edward VI School, Berkhamsted and at St Thomas's Hospital. He served as house surgeon at St Thomas's, at the Hospital for Sick Children in G

Born on 18 January 1865, the eldest child of John Heygate Vernon, an architect, and Caroline Miller, his wife. He was educated at Mill Hill School and at St George's Hospital, where he gained the W Brown exhibition, serving as house surgeon, demonstrator of anatomy and physiology, and clinical assis