How do we find the Attorney for a person who recently passed away? I am his brother and need to find his attorney.

I think you might be on the wrong track.  You do not need to find a deceased person's attorney in order to probate his estate.  You might have another reason for finding your brother's attorney, but you do not need him to handle your brother's affairs.    What you should do is consult with an attorney you choose, preferable in or close to the county in which your brother resided when he passed away. That attorney will explain how the process works, and you can take it from there.   This is complicated and an attorney will relieve a lot of the stress associated with this sad time in your life.  I wish you the best.