Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Problem:Context : Lorenzo wrote after Lafargue's death: ''The double, original and, whatever the rutinarians say, even sympathetic suicide of Paul Lafargue and Laura Marx (in Spain, women keep their maiden surname after marriage), who knew and could live united and lovers until death, has awakened my memories (...) Lafargue was my teacher: his memory is for me almost as important as that of Fanelli.
Question : What is Paul Lafargue's spouse's name?
Solution:
Laura Marx