MICHAELIS, Walther. 18?? — 1???. German Student of Indology or of IE Linguistics. Apparently among the last students of Weber. Ph.D. 1898 Berlin. One Dr. W.M. (2.2.1873–27.3.1967) was in 1931-35 Director of Francke Foundation in Halle and member of the NSDAP.
I have included him as Janert lists his work under Indian religion, but from Internet references it seems rather to belong to classical philology. With libraries closed because of Covid I cannot get the dissertation itself for checking (March 2021).
Publications: Diss. De origine indicis deorum cognominum. 90 p. B. 1898.
Sources: Diss. in Janert.