And Shapley for the stable marriage problem!Oh my bad. It is now the fifth time.
Maria Sklodowska & Pierre Curie (1903)
Iréne Curie (the daughter of Maria & Pierre) & Fréderic Joliot (1935)
Gerty & Carl Cori (1947)
May Britt & Edvard Moser (2014)
Esther Duflo & Abhijit Banerjee (2019)
There is also Alva & Gunnar Myrdal but different disciplines and not the same year.