This is a case that can best be determined in a court of law. In determining the case, the judge will consider the best interest of the child. The documents that will be required to confirm the change of names are the birth notification and the new birth certificate.
If you were a responsible father and your name appears in the birth notification as the father, then this case favors you.
A child's best interests include;
- Right to nationality.
- Right to identity.
- Right to parental care.
- Right to food and shelter.
- etc.