Born at Tiverton, Devon in 1849, son of Frederick Mackenzie, MRCS 1838, coroner to the borough of Tiverton. He was educated at Blundell's School, then still housed in the town of Tiverton but now outside it, and came to the London Hospital for his medical training. He served the Hospital as resident

Born at Llancoats, near Fishguard, South Wales on 1 March 1850, the second and youngest child of David Harries, farmer, and Mary Davies his wife. He was educated at the Haverfordwest Grammar School and from there proceeded to Guy's Hospital, becoming in due course resident obstetric officer and the