At first the committee had intended to honour only Pierre Curie and Henri Becquerel, but a committee member and advocate for women scientists, Swedish mathematician Magnus Gösta Mittag-Leffler, alerted Pierre to the situation, and after his complaint, Marie’s name was added to the nomination. Marie Curie was the first woman to be awarded a Nobel Prize.
I thought her husband took a lot of the credit at the time. Might be mistaken about that though.
https://en.m.wikipedia.org/wiki/Marie_Curie