Roberts was born on 18 March 1830 at
Bodedern on the
Isle of Anglesey the son of David and Sarah Roberts. He was educated at Mill Hill School and at
University College London, graduating with a BA in 1851. After completion of his medical studies he was appointed a house surgeon at
Manchester Royal Infirmary. He was elected to membership of the
Manchester Literary and Philosophical Society on 24 January 1860 after becoming a member of the Royal College of Surgeons. He was appointed Professor of Medicine,
Owens College, Manchester from 1863 to 1883. His particular research field was that of renal disease. He was elected a
Fellow of the Royal Society in 1877 and
knighted in 1885. He died in London on 16 April 1899, and was buried in Llanymawddwy, Merionethshire. == Contribution to the discovery of penicillin ==