TITLE: Are there two Raynauds?
QUESTION [8 upvotes]: The Wikipedia page on Michel Raynaud says that he worked with Grothendieck on the SGA volumes. However, in SGA 1 and 2 the name Mme Michèle Raynaud is given. According to the Genealogy Project, the two are different persons, but I cannot find any further information on Michèle Raynaud. Are there really two Raynauds, or did Michèle Raynaud just become Michel Raynaud at some point?

REPLY [2 votes]: While Kevin Buzzard's comment is more informative than what I could come up with (not knowing the involved persons) here is some generally accessible information showing that there is a Michèle and a Michel.
First, the MathSciNet author database lists both (and MathSciNet is very good at 'merging' different names even pseudonyms under which one and the same person published).
Second, and more significantly, during a period of several years, sixties/seventies, one can find a variety of papers published by Michèle Raynaud as well as papers published by Michel Raynaud.
For example:

Raynaud, Michèle Théorèmes de Lefschetz en cohomologie étale des faisceaux en groupes non nécessairement commutatifs. (French)  C. R. Acad. Sci. Paris Sér. A-B  270  1970
Raynaud, Michel Anneaux locaux henséliens. (French) Lecture Notes in Mathematics, Vol. 169 Springer-Verlag, Berlin-New York 1970