Gerald Roche Lynch OBE FRIC DPH (1889–1957) was a British forensic scientist and public health analyst associated with several infamous murders as a medico-legal expert. An expert on poisons he appeared as an expert witness in multiple murder cases in the 20th century.
He was an important part of the oddly named "Bastardy (Blood Tests) Bill" of 1939, concluding that such tests could accurately prove paternity (the accuracy was much less than modern DNA testing).[1]
He was born in Notting Hill, London on 12 January 1889, the son of Dr Jordan Roche Lynch. He was educated at St Paul's School, London then studied Medicine with a scholarship to St Mary's Hospital Medical School in London from 1906. He graduated MB in 1913.[2]
In the First World War he served as an assistant physician with the Royal Navy. Afterwards he worked with Sir William Willcox and in 1920 (aged only 31) replaced him representing the Home Office in officially assisting the CID in criminal investigations involving poison, bringing him frequently to work alongside Sir Bernard Spilsbury. He became Director of Chemical Pathology at St Mary's Hospital on behalf of the Home Office in 1936.[3] He served as President of the Royal Institute of Chemistry from 1946 to 1949.[4]
He retired in 1954 and died at his home in Slough on 3 July 1957, aged 68.[5]
In 1919, he married Sybil Marguerite Pinnock who died very young. They had a daughter, Bridget Roche Lynch.[6]
