What about "Ada", "Miranda" or "Haskell"? First names, too, albeit ones much less common these days. ("Linda" the language isn't even in that category, popularity-wise, although the source of the name seems to be a weirder story)
The same problem would probably arise if the last names would be more common, too. "Pascal" and "Turing are probably rare enough ('though "Pascal" was a bit in fashion as a boy's name in Germany when I was young).
According to Wikipedia at least, "Julia" is not named after anyone in particular.
(And combining both Wirth and Shakespeare, technically speaking Oberon is a valid first name, too)
There's also Chuck, Idris, Karel, Joy, Tom and arguably Euclid, Janus and Mercury.
The jury's out on "Rexx" and "Nial"…