I remember Satoshi sent 10BTC to Hal Finney to test the transaction system, perhaps you are referring to that user?
This is the transaction to Hal Finney (the first transaction ever) on 2009-01-12 03:30:25
http://blockchain.info/address/1Q2TWHE3GMdB6BZKafqwxXtWAWgFt5Jvm3Hal Finney sent the 10 BTC on 2010-11-16 to another address that is still active. There are no connections between '12hig' and Hal Finney's addresses.
If it's not Satoshi, then somebody who started mining one day after Satoshi tested the transaction system the first time.