A fictional name. Vatstats.net is a flight simulator / ATC simulation hobbyist site.
Somebody on that site apparently extended virtual pilot Aning Wong's flight biography to place her in the fatal cockpit. Twitter did the rest. And, yes, I fell for it, too.
Thanks. A post at Le Figaro via google translate:
Lufthansa, Germanwings parent company, did not confirm reports that one of the two pilots was found alone at the controls, the other remains locked out of the cockpit. The captain had more than 10 years of experience and more than 6,000 hours on Airbus aircraft, Germanwings indicated on Tuesday.
David Philippot, Berlin