Pierre and Marie Curie

Maria Sklodowska-Curie and Pierre Curie were pioneers in the early field of radiation.

Marie Curie died from cancer-causing radiation poisoning, whereas her husband - who would have probably suffered a similar fate - was actually run over by a coach.

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Pierre Curie and Marie Curie were awarded The Nobel Prize in Physics, 1903:
"in recognition of the extraordinary services they have rendered by their joint researches on the radiation phenomena discovered by Professor [Henri Becquerel]?" -- http://www.nobel.se/chemistry/laureates/1911/

Marie Curie was awarded The Nobel Prize in Chemistry, 1911:
"in recognition of her services to the advancement of chemistry by the discovery of the elements radium and polonium, by the isolation of radium and the study of the nature and compounds of this remarkable element" -- http://www.nobel.se/physics/laureates/1903/index.html