G.R. No. L-17630; October 31, 1963
Testate Estate of the Late Don Alfonso de Castellvi, Administratrix Natividad Castellvi de Raquiza, petitioner-appellee, vs. Jose Castellvi and Consuelo Castellvi, respondents-appellants.

FACTS

Alfonso de Castellvi died in 1940, leaving a will that bequeathed two-thirds of his estate to his legally adopted daughter, Natividad Castellvi de Raquiza, and one-third to his brother Juan (or Juan’s heirs). In the probate proceedings, Jose and Consuelo Castellvi opposed the will, claiming to be the decedent’s acknowledged natural children. On December 11, 1940, the court admitted the will to probate. On that same date, Emilia Trono, as guardian-ad-litem for the minor Natividad, entered into an agreement with Jose and Consuelo. The agreement recognized them as acknowledged natural children and stipulated that Natividad would give them one-half of her two-thirds share from the estate. The court approved this agreement in its probate order.
Years later, upon reaching majority, Natividad, through her husband, sought to annul the 1940 agreement. She filed a motion in the estate proceedings, which was denied on grounds of finality. She then instituted a separate civil case for annulment, which was eventually dismissed without prejudice. The issue was subsequently raised again within the testate proceedings, leading the lower court to rule that Jose and Consuelo had no right to inherit, declaring Natividad and the collateral heirs as the sole heirs entitled to the estate.

ISSUE

The core issue is whether the agreement of December 11, 1940, wherein the adopted daughter’s guardian recognized the oppositors as acknowledged natural children and agreed to share the inheritance, is valid and binding.

RULING

The Supreme Court affirmed the lower court’s order, declaring the agreement null and void. The legal logic rests on two principal grounds. First, the agreement sought to determine the heirs and their shares at a premature stage of the proceedings. When the agreement was made and approved on December 11, 1940, the court had only just admitted the will to probate. No administrator had been appointed, and the estate’s assets and liabilities had not been liquidated. The court thus lacked jurisdiction to decree the distribution of the estate or definitively rule on heirship at that point. Its order approving the settlement was therefore issued without authority.
Second, and more fundamentally, the agreement violated a positive rule of law. The appellants claimed status as acknowledged natural children, a status dependent on voluntary recognition by the parent or a judicial decree. The decedent’s will expressly stated he had no descendants other than his adopted daughter, constituting a disavowal. The guardian-ad-litem’s contractual recognition, made without any judicial declaration of filiation, contravened the Civil Code provisions governing acknowledgment. Such a status cannot be established by a mere contract between other parties; it is a matter of strict legal prescription. Consequently, the agreement was void ab initio as contrary to law. The Court also found that Natividad’s subsequent conduct, which appellants argued implied admission of their status, constituted at most a waiver of specific funds due to financial need and did not validate the illegal agreement or confer heirship.