In the Philippine legal system, the naming of children is governed strictly by the Family Code of the Philippines and subsequent amending laws. When a child is born out of wedlock (illegitimate), the choice of surname is often a point of confusion for many parents.
Under current Philippine law, the general rule is that illegitimate children shall use the surname of their mother. However, there are specific conditions and procedures regarding the adoption or reversion to the mother’s surname.
1. The Legal Framework: Article 176 of the Family Code
The primary law governing this is Article 176 of the Family Code, as amended by Republic Act No. 9255.
- The Default Rule: Illegitimate children shall use the surname of their mother.
- The Exception: They may use the surname of their father if their filiation has been expressly recognized by the father through:
- The record of birth appearing in the civil register; or
- An admission in a public document or a private handwritten instrument and signed by him.
Recognition vs. Requirement
It is a common misconception that if a father recognizes a child, the child must use the father's surname. The Supreme Court clarified in the landmark case of Grande v. Antonio (G.R. No. 206242) that the law gives the child the right to use the father's surname, but it does not make it a mandatory requirement. The mother, who exercises sole parental authority, generally maintains the right to decide the child's initial registration.
2. Changing from Father’s Surname to Mother’s Surname
If a child was already registered using the father’s surname (pursuant to RA 9255) and the mother now wishes to change it back to her own, the process is not merely administrative.
Scenario A: Administrative Correction (Clerical Error)
If the mother's surname was misspelled or there was a clerical error in the entry, Republic Act No. 9048 allows for administrative correction through the Local Civil Registrar (LCR) without a court order. However, a total change of surname from the father's to the mother's is rarely considered a "clerical error."
Scenario B: Judicial Petition for Change of Name
If the child is already using the father's surname on their Birth Certificate, changing it to the mother’s surname typically requires a Petition for Change of Name under Rule 103 of the Rules of Court.
Valid Grounds for Judicial Change of Name:
- When the name is ridiculous, tainted with dishonor, or extremely difficult to write or pronounce.
- When the change is a result of a change in status (e.g., a court ruling on filiation).
- When the change will avoid confusion.
- When the child has been continuously using the mother's surname and a change to the father's (or vice versa) would cause undue prejudice.
Note: The court's primary consideration in these petitions is always the "Best Interest of the Child."
3. The Impact of Parental Authority
Under Article 176, illegitimate children are under the sole parental authority of the mother. This means:
- The mother has the legal right to decide the child's surname at the time of birth registration.
- Even if the father signs the Affidavit of Admission of Paternity (AAP), the mother can choose to keep her surname for the child unless she also executes an Affidavit to Use the Surname of the Father (AUSF).
4. Key Procedural Steps for Registration
If the child is not yet registered or is being registered late, here is the protocol followed by the Philippine Statistics Authority (PSA):
| Document Needed | Effect on Surname |
|---|---|
| Birth Certificate only | Child uses Mother's surname. |
| AAP (Affidavit of Admission of Paternity) | Father is recognized; Child may still use Mother's surname. |
| AAP + AUSF (Affidavit to Use Surname of Father) | Child's surname is changed to the Father's in the Civil Registry. |
5. Summary of Rights
- Can the mother choose her own surname for the child at birth? Yes, even if the father is willing to acknowledge the child.
- Can a child "revert" to the mother's name later? Yes, but if the father’s name is already on the birth certificate and the child is using it, a court order (Judicial Petition) is usually required to change the legal name.
- Does the father's support depend on the surname? No. A father's obligation to provide support is based on filiation (proof that he is the father), not on whether the child carries his last name.
Legitimation Warning
If the parents of an illegitimate child eventually marry (provided there were no legal impediments to marry at the time of conception), the child becomes legitimated. In this case, the child is required to use the father's surname as their status is elevated to that of a legitimate child.