[Someone]

I’m not sure about the “most”, and she does get recognition. https://www.theguardian.com/science/2018/mar/14/stephen-hawk...:

”It is clear that he owed a great deal to his first wife, Jane Wilde, whom he married in 1965 […]. Jane was exceptionally supportive of him in many ways. One of the most important of these may well have been in allowing him to do things for himself to an unusual extent.”