One thing, never post name, phone number, address, SSN, etc on the forum. LE cannot search it in their database from this forum. Do what michiganstud and Metallic4 suggested. Or even if you cannot find his last name, the lawyer can find his last name once you file a court paper.
I would go to his house and talk to him face to face.
Confronting him is not a good idea. He may file a harrassment suit against you for going over to his house to confront him. It's wise to file a lawsuit against him and the lawyer will find his last name and fill out the court papers. And let the lawyer do his best helping you with the lawsuit.
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