This Affidavit may be used to change the name of a child within the first 12 months after birth. Thank you for your request to correct the spelling of a name or other data listed on the certificate of live birth.PETITION FOR CHANGE OF NAME OF A MINOR. (Md. General affidavit form for use within the State of Maryland. Modify this affidavit to meet your specific needs. If you are filing the name change yourself, you may want to use the court form found on the Maryland Courts website. The affidavit must be sworn before a notary public. The affidavit is available on the Maryland Department of Health's website. Maryland Affidavit Templates. Use our Affidavit template to swear to the truthfulness of a statement or fact.