Updated Saturday 10:33 a.m. A blogger has discovered a listing for a Charlotte E. Watson in the Columbia University directory and suggests that it is an alias for Emma Watson, whose full name is Emma Charlotte Duerre Watson.

(Or maybe it’s just the listing for the actual Charlotte Watson who attends Columbia, as a commenter on the Columbia blog Bwog has pointed out.)

Of course, there have also been reports linking Watson to Yale (here, here and here, with the second report debunked here), Harvard (here), Brown (here) and Cambridge (here). So your guess is as good as ours.

(Photo: Gabriel Bouys/Agence France-Presse—Getty Images)