Looks like it: http://www.google.com/corporate/history.html

Larry and Sergey's Charlie Rose interview is a bit unclear, because Larry talks about getting that check from a "David Sheridan" or "Sheraton", one of the "founders of Sun". I think he may have mixed up Andy with the Stanford faculty member at whose home they met.

The only other occurrence I see of "David Sheraton" is here: http://transcripts.cnn.com/TRANSCRIPTS/0407/14/i_ins.01.html

Charlie Rose interview: http://video.google.com/videoplay?docid=6958201596441974119 (40 minutes in)