Robert Wilhelm Bunsen was born March 30, 1811 in Göttingen and died August 16, 1899 in Heidelberg. He was a German inventor, chemist, and professor whose light studies created the field of spectrum analysis.
Sir Henry Enfield Roscoe spent time studying under Robert Bunsen in Heidelberg, receiving his PhD in 1854.
Roscoe, Henry E. (Henry Enfield). “Robert Wilhelm Bunsen.” The Life & Experiences of Sir Henry Enfield Roscoe ... Written by Himself. London, England: Macmillan Company, 1891–1906. https://digital.sciencehistory.org/works/zk51vh82p.