Whether your children are entitled to any property from your ex-husband's estate (property) depends on whether he has excluded them from his will or not. A parent can legally disinherit
a child or children from inheriting any property from his or her estate. To accomplish this, a parent must, in the parent's will, expressly exclude (disinherit) the child or children.
If the parent has not expressly disinherited the child or children in the will, that child or children are entitled to a portion of the parent's estate, even if the parent did not leave them anything in the will, or mention those children at all. State law presumes that children not mentioned or provided for in a parent's will were unintentional omitted and therefore may inherit. [The technical terms for such children is "pretermitted heirs."] The percentage of the estate the omitted child or children may receive is set by the law of the state where the parent died.