Can My Husband Get Custody of Kids Who Aren't His Biological Children in a Texas Divorce?

Attorney Answer

Biology alone may not settle this. Under Texas law, a husband can be the legal father of a child born during the marriage even if he is not the biological father, and that legal status is what determines his rights in a custody case, not DNA.

Texas Family Code Section 160.204 creates a presumption that a man is the father of a child if he is married to the mother when the child is born, or if the child is born within 300 days after the marriage ends. This presumption applies automatically, regardless of biology, and it stays in place unless it is legally rebutted. Rebutting it generally requires either a valid denial of paternity filed by your husband along with another man's acknowledgment of paternity, or a court adjudicating parentage, which often involves genetic testing, in a suit affecting the parent-child relationship.

This matters a great deal for your case. If the presumption applies to your children and no one has legally challenged it, your husband is currently their legal father in the eyes of the court, which generally gives him standing to seek conservatorship and possession, separate from whether he is biologically related to them. If you want a different outcome, addressing parentage directly, rather than assuming biology settles it, needs to happen as part of or before the divorce.

There is another possibility worth naming, since you describe the children as not his. If the children were born before your marriage, the presumption for a child born during the marriage does not apply — but that does not end the parentage question, because Texas Family Code Section 160.204(a) lists five presumptions, not one. Under Section 160.204(a)(4), a man who married the mother after the child's birth is still a presumed father if he voluntarily asserted paternity, by filing an assertion with the vital statistics unit, being voluntarily named as father on the birth certificate, or promising in a record to support the child as his own. And under Section 160.204(a)(5), a man is a presumed father if, during the first two years of the child's life, he continuously resided in the household in which the child resided and represented to others that the child was his own — no marriage and no adoption required. So check those provisions against your facts before treating parentage as settled. Either way, take his threats seriously rather than ignoring them. Under Texas Family Code Section 102.003, a nonparent who has had actual care, control, and possession of a child for at least six months, ending not long before filing, can have standing to ask a court for custody rights. Standing only opens the courthouse door, though. Texas courts strongly favor a fit parent keeping custody over a nonparent.

Once parentage is settled, Texas courts decide conservatorship and possession based on the child's best interest under Family Code Chapter 153, looking at factors like each parent's involvement, stability, and the child's needs.

What you can do

1. Raise the parentage question with a family law attorney right away, since it affects how the whole divorce and custody case proceeds. 2. Ask about petitioning the court to adjudicate parentage, including whether genetic testing makes sense for your situation. 3. Understand that if his paternity is legally rebutted, his child support obligation toward the children ends too, so this is a decision with financial as well as custody consequences. 4. Keep any records relevant to the children's parentage and your marriage timeline organized for your attorney.

This is general legal information, not legal advice, and a Texas family law attorney can advise you on your specific situation, including timing that matters for this issue.