The general answer to your question is no - you need the person's last name. However, it appears that you have sufficient information to obtain ...
Request for Civil Harassment Restraining Orders (Form CH-100 PDF file type icon );
I went to the police dept and they told me to get a restraining order against her cuz this is called harassement. I dont know her last name and ...
What if I don't know the name of the person harassing me?
If you do not speak English well, check to see if the court will be providing an interpreter at the hearing.
You should bring the name,
The petition and any temporary restraining order must be personally served on the
Name of Person You Want Protection From:
You can file for a Domestic Violence Restraining Order if you, or your minor child, ... Whether or not you get a temporary order, the clerk will tell you when to come ... Then the judge will ask each of you to give your name for the court “record.
More often than not, stalking/cyberstalking is committed by a current or former