The status of a child born to a married woman but allegedly fathered by another man raises two questions: is the child legitimate, and who has custody? On legitimacy, the law establishes a strong presumption of legitimacy: children conceived or born during a valid marriage are presumed legitimate, and this presumption is one of the strongest in law. It is not overcome merely by the mother's admission of infidelity or her declaration against the child's legitimacy; the law does not allow the mother to declare against the legitimacy of her child. The presumption of legitimacy can be impugned only by the husband (or, in exceptional cases and within limits, his heirs), and only on specific grounds, such as the physical impossibility of the husband having access to the wife during the period of conception (for reasons like physical incapacity, living separately such that access was not possible, or serious illness), or, in proper cases, biological or scientific proof (DNA) that the husband could not have been the father, and the action to impugn must be brought within the strict periods the law provides. Until successfully impugned, the child remains legitimate, with all the rights of a legitimate child. If, however, the child is established to be illegitimate (for example, the presumption is validly overcome, or the child was born to an unmarried mother), then the rules on illegitimate children apply: the child is under the sole parental authority and custody of the mother, and the biological father's role is generally limited to support and possible visitation, with custody passing to him only if the mother is shown to be unfit. So a child conceived during a valid marriage is strongly presumed legitimate, a status only the husband can impugn on narrow grounds, and where a child is illegitimate, custody rests with the mother.
The Strong Presumption of Legitimacy
Children conceived or born during a valid marriage are presumed legitimate — one of the strongest presumptions in law. It is not overcome by the mother's admission of infidelity; the mother cannot declare against her child's legitimacy.
Who May Impugn, and How
Only the husband (or his heirs, in limited cases) may impugn legitimacy, on narrow grounds — physical impossibility of access during conception, or DNA proof — within strict periods. Until successfully impugned, the child stays legitimate.
If the Child Is Illegitimate
If the child is established as illegitimate, the child is under the sole custody of the mother, and the biological father is generally limited to support and visitation, gaining custody only if the mother is unfit.
Practical Takeaways
- A child born during a marriage is strongly presumed legitimate;
- Only the husband can impugn it, on narrow grounds;
- An illegitimate child is in the mother's custody.
Frequently Asked Questions
Is a child born to a married woman but fathered by another man legitimate? The child is strongly presumed legitimate because conceived or born during a valid marriage. This presumption is not overcome by the mother's admission of infidelity, as the mother cannot declare against her child's legitimacy.
Who can question a child's legitimacy? Only the husband, or in exceptional cases and within limits his heirs, may impugn the legitimacy of a child, and only on specific grounds within the strict periods the law provides.
On what grounds can legitimacy be impugned? Grounds such as the physical impossibility of the husband having access to the wife during the period of conception, or, in proper cases, biological or scientific proof like DNA that the husband could not have been the father.
Who has custody of an illegitimate child? The mother. An illegitimate child is under the sole parental authority and custody of the mother, and the biological father is generally limited to support and possible visitation unless the mother is shown to be unfit.
This commentary is for general informational purposes only and does not constitute legal advice. For guidance specific to your situation, please consult a licensed attorney.
If you have questions about your rights or options under Philippine law, our firm is available to assist. You may reach us via Viber or WhatsApp, call us at 0995 433 5550, or send an email to vivasnobles@gmail.com. We look forward to hearing from you.