Short answer. Yes. The children of the subsequent marriage conceived before it ends stay legitimate, and the absent spouse's reappearance does not change that. Article 43 fixes their status by law: the marriage terminates going forward, but children already conceived under it keep the standing they were born with.

What the law says

The children of the subsequent marriage conceived prior to its termination shall be considered legitimate

Family Code, Article 43 — Effects of Terminating a Subsequent Marriage. Read the full provision →

What the law says

The absolute community of property or the conjugal partnership, as the case may be, shall be dissolved and liquidated, but if either spouse contracted said marriage in bad faith, his or her share of the net profits of the community property or conjugal partnership property shall be forfeited in favor of the common children

Family Code, Article 43 — Effects of Terminating a Subsequent Marriage. Read the full provision →

Termination looks forward; legitimacy looks back

The fear behind this question is that a reappearance retroactively unmakes the second family. It does not. The Code speaks of the termination of the subsequent marriage, not of its being void from the beginning, and it then says in terms that children conceived prior to that termination shall be considered legitimate. The status is settled by the fact of conception during the marriage, and it is not reopened by what happens afterwards. That is a deliberate choice: the children had no part in the absence, the presumption of death, or the remarriage, and the Code declines to make them carry the consequences of any of it.

Good faith and bad faith change money, not children

The rest of Article 43 is largely about property and it does turn on fault. The community or conjugal partnership is dissolved and liquidated; a spouse who contracted the subsequent marriage in bad faith forfeits his or her share of the net profits in favour of the common children, or failing them the children of a previous marriage, or failing those the innocent spouse. Donations by reason of marriage stay valid unless the donee married in bad faith, in which case they are revoked by operation of law. Note where the forfeited share goes first: to the children. Bad faith costs a spouse money and inheritance rights, but it never costs a child legitimacy.

What the innocent spouse may also do

Two further consequences sit in the same article and are easy to miss. The innocent spouse may revoke the designation of the spouse who acted in bad faith as beneficiary in any insurance policy, and may do so even if such designation be stipulated as irrevocable — an unusual override of what the policy itself says. And the spouse who contracted the subsequent marriage in bad faith is disqualified from inheriting from the innocent spouse, by will or by intestacy alike. Both of these are about the adults. Neither touches the children's share, which comes to them as legitimate children of that marriage.

What to get in order

Practically, the documents that matter are the children's birth certificates, the record of the subsequent marriage, and whatever established the first spouse's absence in the first place. The liquidation is where the real dispute usually lands, because bad faith has to be shown before any forfeiture follows, and the person alleging it carries that burden. If insurance or a pension is involved, the beneficiary designation should be looked at early rather than after a claim is filed — revocation is available, but it has to actually be exercised.

Cases citing this provision

These Supreme Court decisions cite the provision above. We list them so you can read them yourself; the summaries of what each decided are not ours to give.

Related provisions

Note. Statute text quoted on this page is reproduced from the official enactment and is linked to the full provision. The explanation around it is general legal information from Vivas & Nobles Law Office, not legal advice. Whether it applies to your situation depends on facts only a lawyer reviewing them can assess.