Sir John Cockcroft OM KCB CBE FRS 1887-1967 scientist, administrator, pioneer in the development of peaceful uses of nuclear power. In 1932, with Dr E. T. S. Walton, he was the first man to split the atom by artificial means. Joint winner of the Nobel Prize for Physics in 1951. Honorary Freeman of the Borough of Todmorden
Sir John Douglas Cockcroft OM KCB CBE FRS (27 May 1897 – 18 September 1967) was a British physicist. He shared the Nobel Prize in Physics for splitting the atomic nucleus with Ernest Walton, and was instrumental in the development of nuclear power. He was the first Master of Churchill College and is buried at the Parish of the Ascension Burial Ground in Cambridge, together with his wife Elizabeth and son John, known as Timothy, who had died at the age of two in 1929.