Neighbor has a court order not to drink alcohol & still drinks and drives. How can we alert the court?

My neighbor is constantly intoxicated & violent (has beaten several women.) I overheard this person saying that they were drunk, had a court order not to drink & would go to prison if they were pulled over by a police officer. Then they got into their car and sped off. I only know this person's first name. I would like to alert their probation officer (if they have one) or the court, but is it possible to do so without a last name? Or is there a way to find out the last name via the court? I have tried various reverse address searches, with no luck. The landlord does not care whether his tenants are subjected to a violent drunk, and the police department will come out when called, but apparently can not do much more than scold him for disturbing the peace. Please help!