En esta noticia
In the state of Louisiana, the law requires registering the baby with the surname of the mother’s husband or ex-husband, even if he is not the biological father. The rule applies if the woman was married at the time of birth or divorced less than 300 days before the birth.
Louisiana’s Civil Registry confirms that this rule is automatic: it does not require the husband or ex-husband to request it, nor the mother to agree. It can only be changed through a specific legal procedure before Vital Records.
Why does the baby carry the ex-husband’s surname even if he is not the father?
Louisiana civil law presumes that a woman’s husband is the father of any child born during the marriage. That presumption extends up to 300 days after a divorce, regardless of who the actual biological father is.
That is why the surname shown on the birth certificate does not depend on a DNA test or a voluntary declaration: it is applied automatically by legal default, unless a procedure is started to change it.
This rule applies in two specific scenarios:
- The mother is married at the time of birth and did not divorce another man in the previous 300 days.
- The mother divorced her husband less than 300 days before the baby was born.
What can parents do to correct the baby’s surname?
To prevent the baby from being registered with the ex-husband’s surname, the mother, the husband or ex-husband, and the biological father must sign a three-party Paternity Agreement together before a notary and two witnesses.
That procedure also requires a DNA test with at least 99.9% probability of paternity. If it is completed at the hospital when the baby is born, there is no cost; if it is done later, a fee must be paid to Louisiana Vital Records.