Why don't you leave the name change until the child is 18? I mean, seriously... you'll have to go to court and get a court order, pay to have the birth certificate changed, get the SSA to change the name on those records....
Why is it so blinking important? Are you the last of your family name? Or is it an ego thing with you? Do you like fighting Mom that much?
"Here is the Georgia Law which governs changes of name:
§ 19-12-1. Manner; petition; publication of notice of filing; hearing and judgment
(a) Any person desirous of changing his name or the name or names of his minor child or
children may present a petition to the superior court of the county of his residence, setting
forth fully and particularly the reasons why the change is asked, which petition shall be
verified by the petitioner.
(b) Within seven days of the filing of the petition, the petitioner shall cause a notice of the
filing, signed by him, to be published in the official legal organ of the county once a
week for four weeks. The notice shall contain therein the name of the petitioner, the name
of the person whose name is to be changed if different from that of the petitioner, the new
name desired, the court in which the petition is pending, the date on which the petition
was filed, and the right of any interested or affected party to appear and file objections.
(c)
If the petition seeks to change the name of a minor child, the written consent of his
parent or parents if they are living and have not abandoned the child, or the written
consent of the child's guardian if both parents are dead or have abandoned the child, shall
be filed with the petition, except that the written consent of a parent shall not be required
if the parent has not contributed to the support of the child for a continuous period of five
years or more immediately preceding the filing of the petition.
(d) In all cases, before a minor child's name may be changed, the parent or parents of the
child shall be served with a copy of the petition. If the parent or parents reside within this
state, service of the petition shall be made in person, except that if the location or address
of the parent is unknown, service of the petition on the parent shall be made by
publication as provided in this Code section. If the parent or parents reside outside this
state, service of the petition on the parent or parents residing outside this state shall be
made by certified mail or statutory overnight delivery if the address is known or by
publication as provided in this Code section if the address is not known.
(e) Where a child resides with persons other than his parent or parents, a copy of the
petition shall be served upon the person acting as guardian of the child in the same
manner as service would be made on a parent.
(f) Upon the expiration of:
(1) Thirty days from the filing of the petition if the person whose name to be
changed is an adult;
(2) Thirty days from the date of service upon the parent, parents, or guardian of a
minor whose name is to be changed if the parent, parents, or guardian reside within this
state; or
(3) Sixty days from the date of service upon the parent, parents, or guardian of a
minor whose name is to be changed if either the parent, parents, or guardian reside
outside the state and the petition is served by mail,
and after proof to the court of publication of the notice as required in this Code section is
made, if no objection is filed, the court shall proceed at chambers at such date as the court
shall fix to hear and determine all matters raised by the petition and to render final
judgment or decree thereon. For such service, the clerk shall receive the fees prescribed
in Code Section 15-6- 77, relating to fees of clerks of the superior courts for civil cases."
http://www.albany.ga.us/law_library/documents/Name Change--Minor Child.pdf