Go into the office and tell them you need to look at the probate index. You don't have to tell them why, just say you are doing some personal research. They will either have it in an index book or on computer. You would then look up all the probate filings for say the past 2 months. There should be a name, case number, date filed, and maybe the name of the executor depending on how they keep their records.
You then take those file numbers and either pull the files yourself (or hopefully its on computer and you can view the docs there) or hand the list to a clerk to pull. What you are looking for is an order to admit will to probate and that should have the name and address of the executor on it. You might also just peruse the will to see if it mentions any heirs and look at any other orders that may give you some information.
Once you have your names you can look at the tax assessor's website and look up what property they owned. So now you have a list of the deceased, the person responsible for the estate and hopefully a bunch of houses they owned!
Good luck!