Margaret "Polly" Grubb (b. September 22, 1907 - d.1963??) was the first wife of pulp fiction author and Scientology founder L. Ron Hubbard, to whom she was married between 1933 and 1947. She was also the mother of Hubbard's first son, L. Ron Hubbard Jr. and his first daughter, Katherine May "Kay" Hubbard. Wikipedia
The definitive Wikipedia entry for Margaret Grubb. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Margaret_Grubb
