Personal information

I recieved a summons the other day and on it, it has my name, address, phone # (that is extremely old), dob and my ssn#.
The father is taking me to court for visitation, custody and I am wanting to know if he has given the courts my "personal" information that is on the summons or does the court look that information up and place it on the summons?
I would like to know because he's sister works for Social Services (city) and if he has my ssn# she has went into my personal file and gave it to him.