JKR has said that Lockhart is not based on any one person she knows, just an amalgamation of qualities of many people she's met.
However, she did indeed base Snape on a chemistry teacher she had. There was an article on him at one point... I have no idea where it is now, maybe someone will inform us.
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Date: 2004-10-12 11:00 am (UTC)However, she did indeed base Snape on a chemistry teacher she had. There was an article on him at one point... I have no idea where it is now, maybe someone will inform us.