He never committed anything before 2011 to Bitcoin. See also below...Regarding all that confusion about commit misattribution, did it ever turn out that Maxwell really did get patches merged prior to the switch to GitHub?
http://www.coindesk.com/gregory-maxwell-went-bitcoin-skeptic-core-developer/
Yes, but it turns out there's more misattribution by Greg. I just submitted this to reddit:@awemany commit authorship fixed on github bitcoin core repo.
https://www.reddit.com/r/btc/comments/45g3d5/rewriting_history_greg_maxwell_is_claiming_some/