I had an aunt named Nettie, and as far as I know, it wasn't a nickname or diminutive. Her "Jewish" name was Genesha, and formal/English name was Nettie. I can't be absolutely certain, as I don't have birth certificate, but Nettie is what's on the 1910 census form when she was ~6 years old.
Glenda
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========================================= Glenda Rubin San Francisco Bay Area Researching: STRYZEWSKI, STRAUSS, JANOFSKY, JANOFF, OBODOV, WERNICK, GREENBERG, KROCHAK. Shtetls: Lipovets, Ilintsy, Pliskov, Starokonstantinov, Krasilov