You could try one of the /sounds like/ type of modules from CPAN. Text::Metaphone and Text::Soundex are two that I have used. Both have limitations. It really depends on what you are willing to consider a "close match". Do you want 'Don Banks' to be a close match for 'Dawn Binx'? You may get odd results.

Alternately, you will need to better define what constitutes a "close match". Is it something that a human would recognize, but is hard to define in programmatic ways? Off-by-one type matches you may be able to program, but it could be error-prone and expensive (time intensive to run).

Any additional info you can supply here would help us better guage what you are trying to accomplish.

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