This is a good place to start your research:
http://www.rootsweb.com/~usgenweb/ky/kyfiles.html (broken link)
St. Matthews has been incorpraited into Louisville, Jefferson Co now but you still want to search everything. I don't live in Jefferson Co, so I can't do any lookups for you, Sorry. But I know you should be able to find something at genweb.
You might also like to search at
www.rootsweb.com and
www.gencircles.com
Good luck,
Celticspirit