Presumed Father: How an Unrecognized Divorce Can Put the Wrong Name on a Birth Record

Portuguese law presumes that the husband of the mother is the father of her child, and that presumption is switched off by the registered end of the marriage. If a divorce granted abroad has never been recognized in Portugal, nothing was ever registered as ending, so the presumption keeps running and a former spouse can end up entered as the legal father of a child he has never met.

It sounds like an impossible mistake, and it is one of the most predictable outcomes in cross-border family files. The registry is not guessing. It is applying a rule to the facts it holds, and the fact it holds is a marriage with no end date.

In this article:

• 1. What is the presumption of paternity?
• 1. How does an unrecognized divorce keep it alive?
• 1. Which families does this actually happen to?
• 1. What the wrong name costs, once it is recorded
• 1. Preventing it, and undoing it if it has already happened
• 1. Frequently asked questions
• 1. Conclusion

What is the presumption of paternity?

It is one of the oldest rules in civil law, and it exists for a practical reason: children need a legal father from the first day, not after an investigation. So the law supplies one. A child born or conceived while the mother is married is presumed to be the child of her husband (Código Civil, article 1826), and that presumption is entered in the birth record automatically, without anyone having to declare it.

The rule then has to be turned off when the marriage ends, and Portuguese law does that by reference to the registered dissolution. The presumption stops covering children born after a defined period counted from the divorce, or from the date on which the spouses stopped living together where that date is established in the proceedings, with three hundred days being the reference the Civil Code uses.

Read that carefully and the failure point is visible. Every part of the shut-off mechanism depends on a divorce that the Portuguese records know about. If the divorce exists only in a courthouse in New Jersey, in Ontario or in a Brazilian notary's office, there is nothing for the rule to count from.

How does an unrecognized divorce keep it alive?

A foreign judgment does not travel on its own. A decree issued by a court in another country is fully valid where it was issued and produces no effect inside Portugal until a Portuguese court reviews and confirms it, under the procedure set out in article 978 of the Civil Procedure Code.

Until that happens, the Portuguese civil records show the last thing they were told, which is the marriage. Not a disputed marriage, not a marriage under review, simply a marriage. When a birth is presented for registration, the registrar looks at the mother's marital status as it stands in those records, sees a husband, and applies the presumption.

There is a second, quieter version of the same problem, and it affects the generation above. A person applying for Portuguese citizenship through a parent or grandparent may find that the ancestor's own record shows a marriage that never ended, that a sibling was registered under a presumed father, or that the parentage in the file does not match the parentage in the family. Those discrepancies are usually not fraud and not error by the family. They are the mechanical result of a divorce that was never brought home.

Which families does this actually happen to?

Almost always families who did everything correctly in their own country and had no reason to think Portugal was still involved.

| Situation | What the Portuguese records produce | The consequence | |---|---|---| | Child born to the mother after a foreign divorce that was never recognized | The former spouse is presumed to be the father | The actual father cannot simply declare paternity | | Child born after a second marriage celebrated abroad | The second marriage cannot be transcribed while the first is open | The child's record does not reflect the parents as married | | Child born to an unmarried couple, mother previously divorced abroad | The presumption follows the mother's registered status | Paternity by the actual father is queried or refused | | Birth registered at a consulate without the divorce being flagged | An entry is created naming the presumed father | Correction later requires a court action, not a form | | Citizenship file for the next generation | The chain runs through a person who is not the parent | The descent claim is built on the wrong line |

The fourth row is the one worth avoiding at any cost. A refusal is annoying, and it can be fixed by fixing the underlying record. An entry made incorrectly is a different animal, because Portuguese law protects registered parentage once it exists.

What the wrong name costs, once it is recorded

Start with citizenship, since it is usually why the family is there. Citizenship by descent works by connecting a child to a Portuguese ancestor through legal parentage. If the record says the father is a man with no Portuguese ancestry, the child's route through the actual father's family does not exist on paper, however obvious the biology is to everyone involved.

Then inheritance. A legal father is a legal heir and a legal ascendant, with everything that follows in a Portuguese succession: a claim on an estate, a place in the order of heirs, a say in the sharing of a house in the Azores that has been in the family for four generations. Estates in these families frequently open decades later, when the people who could have explained the situation are gone and the record is all there is.

Then parental responsibility. The person named on the record is the person the law treats as holding rights over the child, including in matters where the consent of both parents is required. Families discover this at inconvenient moments, and the discovery is rarely gentle.

And, quietly, names. Portuguese naming follows parentage, so the wrong father produces the wrong surname, which then appears on every document the child ever obtains and creates a discrepancy that another registry, years later, will query.

Preventing it, and undoing it if it has already happened

Prevention is straightforward and consists of doing things in order. The foreign marriage is transcribed into the Portuguese records, so that there is a marriage on file. The foreign divorce is submitted for review and confirmation by a Portuguese court. The confirmed divorce is entered against the marriage record, which is the moment the marriage is shown as dissolved and the presumption stops running. Births are registered after that, against a status that reflects reality.

The confirmation procedure is not a retrial. The Portuguese court does not reconsider the merits of the divorce, does not revisit custody or the division of property, and does not ask whether the separation was justified. It verifies that the decision is authentic and final, that the court that issued it was competent, that the parties were properly heard, that no incompatible Portuguese decision exists, and that the result is not contrary to fundamental principles of Portuguese law. A consensual foreign divorce with a complete, apostilled decree ordinarily passes that examination.

Where an entry has already been made naming a presumed father, the file changes shape. Correcting registered parentage means challenging it, which is a court action with its own requirements as to who may bring it, on what evidence and within what limits, and it runs alongside the recognition of the divorce that should have preceded the registration. It is not hopeless, and it is considerably more work than doing it in the right order would have been. That is the whole argument for having the records read before a birth is presented for registration rather than after.

A note on documents, because the same defects recur. The decree must be the final one, complete, certified by the issuing court, and apostilled under the Hague Convention of 1961 where the country of origin is a party, which covers the United States, Canada, Brazil and the United Kingdom. Settlement agreements, attorney correspondence and docket printouts are not the decision. An apostille attached to a notarized copy legalizes the notary, not the decree, and is the single most common technical failure we see.

Frequently asked questions

The real father signed the American birth certificate. Does that not settle it? Not for Portugal. The Portuguese record is created under Portuguese rules, and where those records still show a subsisting marriage, the presumption can override the parentage stated on the foreign certificate.

We divorced fifteen years ago. Is the presumption really still running? The shut-off mechanism counts from a registered dissolution. Without recognition, there is no dissolution in the Portuguese records to count from, whatever the calendar says.

Can the former spouse simply confirm he is not the father? A declaration helps and does not, by itself, displace a presumption that the law attaches automatically. Where a record already exists, the route is a court challenge, not a letter.

Does this affect adult children too? Yes. An adult whose Portuguese record names the wrong father faces the same obstacle in a citizenship or inheritance file, and it usually surfaces when a relative applies and the registry reads the whole line.

Conclusion

The presumption of paternity is not a trap. It is a rule that works perfectly well when a country knows the marriage ended, and produces an absurd result when it does not.

At Fluxia Law we read the family's Portuguese records before any birth or marriage is presented for registration, because the difference between a correct record and one a court will later have to undo is almost always the order in which the steps were taken.

Read also

• My Parents' Divorce Is Blocking My Portuguese Citizenship. Here's Why.
• Why the Consulate Cannot Register Your Foreign Divorce
• How to Register an American Divorce in Portugal