Yes, but Mark Stephens (this Cringely) is arguably the Cringely, in that he was the one who made the column popular, and he published a book (Accidental Empires: http://www.amazon.com/Accidental-Empires-Silicon-Millions-Co...) under the name. So there have been other Cringelys, but when people say "Robert X. Cringely," they almost always mean Mark Stephens.
https://en.wikipedia.org/wiki/Robert_X._Cringely