Gary Gygax (1938–2008), an American writer and game designer
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Markus Gygax (born 1950), the current commander of the Swiss Air Force
Gygax persuaded Lorraine Williams to invest in TSR, and hired her to manage the company.
In 1983, The Land Beyond the Magic Mirror was the first place to feature a lightning quasielemental, although the description says they inhabit the Positive Energy Plane and the Elemental Plane of Air, indicating that Gygax didn't expect anyone to know what the Quasielemental Plane of Lightning was.
Under the Blumes, the company ran into financial difficulties in 1984, and although Gygax managed to have the Blumes removed from the board of directors, they subsequently sold their shares to company manager Lorraine Williams, who succeeded in forcing Gygax out of the company at the end of 1985.