Road rage, followed home! Happened to us recently.
Road-rage is a problem that you may not be able to get away from once it is started ... Deescalation works only if the other party cooperates..country road driving at night is safer with high beams, slower speeds do help and ptt's did slowed down to 55... That was an attempt to deescalate ... But the guy waited for them! Now is not a high beam or deescalation issue, the guy was looking for trouble.
You did what you needed to do...you kept your family safe.. Somebody mentioned following up with the police... That is good advice. you also need to help your dad and neighbors secure their property, they need to know about this guy just in case he is a looney. Maybe even getting a picture of him from the authorities and showing to the tenants of the other two houses. Nothing may happen but it's best to be prepared.