¶1delivered the opinion of the court.
¶2Claudina Morales filed a sworn petition in the District -Court of Humacao praying that José Marcelino Esteras y Morales, the acknowledged natural son of José Ignacio Este-rás y Rivera and son of the petitioner, be declared the intestate heir of the latter.
¶3*1005It was alleged in the petition that the acknowledgment of José Marcelino was made by a judgment of the District Court of Hximacao and a certified copy of such judgment was introduced as evidence, the pertinent part of which reads as follows :
“Claudina Morales v. Isidoro Esterás et al. Acknowledgment of filiation. On this 22d day of May, 1909, appeared Attorney José G. Torres on behalf of the plaintiff in this action and read a motion accepting the proposition made by the defendant, represented by Attorney Enrique López Díaz, whereby the last-mentioned party consents to a judgment declaring that José Marcelino, the child of the plaintiff, is the son of José Ignacio Esterás. The court having-heard the motion and the agreement of the parties orders that judgment be rendered in favor of the plaintiff, and therefore decrees that José Marcelino, the son of Claudina Morales, be and hereby is declared the acknowledged illegitimate child of José I. Esterás.”
¶4No oral evidence was taken and the case having been submitted to the court it decided the same by the following order:
“On February 16, 1911, Attorney José G. Torres appeared in chambers on behalf of the party in the above-entitled cause and petitioned the court to declare José Marcelino Esterás Morales, the acknowledged son of José Ignacio Esterás Rivera, who died in Caguas on January 23, 1908, to be the sole and universal heir of the latter, and proved such acknowledgment by presenting a certified copy of a judgment of the District Court of Ilumacao rendered on May 22, 1909. Whereas, the said judgment was rendered by agreement of the parties, as is set forth therein, and for that reason cannot be regarded by the judge as having any legal effect whatever for the purpose of proving the filiation of José Marcelino Esterás, because declarations of civil status cannot be made by compromise or stipu-. lation between the parties, and, whereas, neither has it been proven that the said José Marcelino Esterás is the only heir of the deceased José Ignacio Esterás y Rivera; therefore, the court denies the petition of Claudina Morales that José Marcelino Esterás Morales be declared the heir of José Ignacio Esterás Rivera.”
¶5Let us first see whether or not the conclusion arrived at by the Judge of the District Court of Humacao with regard to the ineffectiveness of the judgment rendered by the same *1006court in the action for acknowledgment of filiation is correct.
¶6Section 1715 of the Revised Civil Code provides that
“No compromise can be made with regard to the civil status of persons …
¶7As defined in section 1711 of the said Revised Civil Code
“A compromise is a contract by which each of the parties in interest, by giving, promising, or retaining something, avoids the provocation of a suit or terminates one that has already been instituted. ’ ’
¶8Manresa, in Ms Commentaries on the Civil Code, volume 12, page 100, says:
“All the authorities agree that the characteristics of a contract of compromise and those which properly determine it are the four following: First, that it is accessory; second, that it is consensual; third, that it is bilateral; and, fourth, that it is onerous. ’ ’
¶9Upon an examination of the judgment in the action for acknowledgment of filiation rendered by the District Court of Humacao in the light of the law and the opinions of the commentators mentioned, the conclusion is reached that it does not clearly appear that the said judgment was the result of such compromise as the law forbids, and therefore that its legal value should not have been denied when it was offered as evidence in the proceedings for the declaration of heirs.
¶10Said judgment was obtained, as therein set forth, by consent of the defendant, which is equivalent to saying that the defendant accepted the claims of the plaintiff or that the defendant expressly admitted as true the facts set forth in the complaint, and a judgment of such nature rendered by a court with jurisdiction over the subject-matter and the parties is valid and cannot be collaterally attacked. (See 23 Cyc., 728, 1055.)
¶11Now, the conclusion reached by us under the circumstances attending this particular case does not imply that'we accept as good practice that which seems to have been followed by *1007the District Court of Humacao in the action for acknowledgment of filiation. In cases of this land, even though.the defendant may admit the truth of the facts set forth in the complaint and such facts may determine the action, it would he more in keeping with the ends of justice for the court also to demand evidence showing the truth of the allegations.
¶12Let ns examine the other ground of the order appealed from, viz., that it has not been proved that José Marcelino Esterás is the only heir of the deceased, José Ignacio Este-rás y Eivera.
¶13The act relating to Special Legal Proceedings provides that the judge to whom the petition for declaration of heirs has been presented shall hear, in the briefest period possible, the proof presented and from the result thereof shall issue the proper order, and provides further that “Said order shall be issued without prejudice to a third party, unless it relates to heirs at law.” (Acts of 1905, p. 141.)
¶14Having examined the evidence offered in this case, the •conclusion may be reached that José Marcelino Esterás y Morales is the acknowledged illegitimate child of José'Igna-cio Esterás y Eivera, but the petitioner did not show That José Marcelino was also the natural child and the sole heir. The declaration to be made by the court is of heirs and must include all the heirs when there are several.
¶15The petitioner should have alleged and shown in this case that her son was also the acknowledged natural child of José Ignacio Esterás y Eivera and that the latter had no other heirs, or at least that the existence of other heirs was unknown, for which purpose the testimony of witnesses acquainted wdth the family relations of José Ignacio Este-rás, and who were worthy of credence by the court, would naturally suggest itself.
¶16The petitioner, therefore, not having presented all the evidence which her case demanded, her petition was properly • denied for that reason, but this decision should not bar the *1008petitioner or any other person really interested from making a new application in accordance with the law.
¶17Affirmed.