Dorian (as recognized by the retailer) bought a crepe from one of the first retailers to accept bitcoins, the 1st transaction of the crepe retailer's bitcoin address at 1KfQKmME7bQm5AesPiizWk6h3JPUekwoBC for 2.2 bitcoins on July 17 2011, can check the Crepe twitter feed: twitter.com/Ocrepes - "The award for being the first customer who bought crepes for @bitcoins goes to ... anonymous (the winner refused to reveal identity)"
Tracing those addresses/transactions back leads to large volume addresses. [EDIT: 432,000 coins]