How can I find the name and address, or even just the name, of a
person if I only have their email address?

Greetings-
  
Thanks for your question.
  
There are a number services and products on the web which can help you
get the information you need.  There is no guarantee, however, since
there isn't any centrally located mega-database of every email address
w/ corresponding personal information.  The following are links to
some search-by-email sites I was able to find:
 
http://my.email.address.is/efreverse.htm
http://wp.netscape.com/netcenter/whitereverse.html?cp=tec_1b
http://www.peoplesearch.net/peoplesearch/peoplesearch_reverse_email_address.html
http://www.strangepages.net/email.html
http://www.email-directory.com/
http://firemantis.com/adoption.finding.birth.mother.htm
  
Search terms:
email reverse lookup
 
If you need additional information/clarification, please ask before
rating this answer.
 
Thanks,
jbf777-ga
GA Researcher

Here is an answer I gave to a similar question:
http://answers.google.com/answers/main?cmd=threadview&id=56982