Can an illegitimate child use the surname of his father?
A. – As a rule, illegitimate children shall use the surname and shall be under the parental authority of their mother (Article 176, Family Code). However, as an exception, illegitimate children may use the father’s surname if there has been an acknowledgement/recognition by the father (Art. 172, Family Code; DOJ Opinion No. 4, S. 1998).