delivered the opinion oe the court.
On the 17th day of January, 1894, the will of Margaret Griffith, who died, a resident of Daviess county, on the 14th day of the same month, was probated in the Daviess. County Court; and, on the 20th day of January thereafter,, her son, John C. Schrader, one of the devisees under the-will, took an appeal from the order of probate, making all the other heirs and devisees appellees. The Daviess Circuit Court was in session when this appeal was taken,, and at the same term a compromise was effected, and the-following order was made in the case: “State of Kentucky. Daviess Circuit Court, January Term, 1894. February 22, 1894. John C. Schrader, Plaintiff, v. Effie Schrader, etc., Defendants. By the agreement and consent of the parties appellant and appellees to this appeal from the order of the Daviess County Court probating the will of Margaret Griffith, deceased, dated January 17, 1894,. the appeal and contest of said will is now, for the consideration herein stated, the receipt of which is acknowledged, settled, and the appeal dismissed, said consideration being the payment to Jennie Schrader, the wife of John C. Schrader, the sum of $2,000, the receipt of which sum Jennie Schrader acknowledges by fixing her signature hereto, which said settlement and payment are accepted and received by John C. and Jennie Schrader as in satisfaction and bar of any contest of said will, by them or either of them; and this action is dismissed. [Signed] John C. Schrader. Jennie Schrader.” The three daughters of Mrs. Griffith, the appellees in that appeal, paid the $2,000 • mentioned. The present appellee, James P. Schrader, at that time resided in McLean county, and was not. before the court on that appeal, no' process having been issued thereon; but the three daughters of deceased, who paid.. *664the money, entered their appearance to the appeal; and, pursuant to the agreement made with John C. Schrader, his appeal was dismissed, and no further steps were taken as to the will until the 19th day of September, 1895, when James P. Schrader and John C. Schrader filed a second appeal from the order of the Daviess County Court probating the will of their mother. Before the trial of the issue involved in the second appeal, the appellees in that appeal, Mrs. Lischy and others, filed their plea in bar thereof, in which they set up the first appeal of John C. Schrader, and the disposition of that contest by the order above referred to, and relied on same as a bar to the second appeal, against both John C. Schrader, and the present appellee, James P. Schrader. Separate demurrers to the plea in bar were filed by John C. and James P. Schrader, which the court overruled as to John C. Schrader, but sustained as to the appellee James P. Schrader. Subsequently the plea in bar was amended,’ appellants alleging that Janies P. Schrader had participated in the settlement above referred to, knew of the negotiations which preceded and induced the appellees on the first appeal to make the settlement and pay' the $2,000 to Jennie Schrader, in consideration of which the appeal of John C. Schrader was dismissed, and these facts were relied on as an estoppel against James P. Schrader. James P. Schrader filed his answer to the plea in bar as amended, and denied that he had induced the appellees in the first appeal to make the settlement, or that he knew anything about it, or had participated in the matter in any way. With the issues thus made up, the parties wrent to trial before a jury, and the court directed the jury to find a separate general verdict on the plea in bar. The jury .returned a general verdict against the will, and a separate verdict against the then *665appellees on the plea oí estoppel against James P. Schrader, and judgment was entered thereon, and this appeal is prosecuted to reverse that judgment.
A number of errors are relied on. It is contended by-appellant — First, that the order dismissing the first appeal of John C. Schrader is a bar under the statute to a second appeal by him, or any other person interested in the will; second, that the court erred in instructing the jury upon the question of undue influence, as it is claimed that there was no testimony introduced on the trial bearing upon this issue; and, third, that there was no evidence of lack of testamentary capacity at the time the will was executed, or, at least, that the testimony on this point was " overwhelmingly in favor of the contention of appellants and that the verdict is consequently flagrantly wrong. It may be taken as settled law that a final judgment of a court of competent jurisdiction upon any disputed question of fact is conclusive as between the parties or privies to the proceeding in which the judgment was rendered; and it is equally well settled by repeated adjudications of this court that a final decision of a court (having jurisdiction of the question) probating or rejecting a will, upon appeal from an order of the county court, is a bar, while it remains in force, to any other appeal for the same' purpose, not only between the parties to the record and their privies, but also to all others who may be interested in it. The reason and necessity for this rule have been so frequently argued that it would be superfluous to repeat them here. See Singleton v. Singleton, 8 B. Mon., 340; Wells’ Will, 5 Litt., 275; Jacob v. Pulliam, 3 J. J. Marsh, 200; Tibbatts v. Berry, 10 B. Mon., 473; Mitchell and wife v. Holder, 8 Bush. 362; and Reed v. Reed’s Trus., 91 Kv., 267 [15 S. W., 525]. But the question to be decided in this case is *666not the legal effect which is to be given to a final decision in the Circuit Court on an appeal in a will case, but whether the consent order entered by agreement of the appellants and John C. Schrader in the Daviess Circuit Court, in pursuance to which his appeal was dismissed, is such a final decision under the statute as to be a bar to the appeal of James P.' Schrader in the second proceeding.
The law governing the probating and rejecting of wills is found in the following sections of chapter 135 of the Kentucky Statutes: 4849 provides that wills shall be admitted to record by the County Court of the County of the testator’s residence. 4850 provides that appeals may be prosecuted from the County Court to the Circuit Court of the same county, and thence to the Court of Appeals, from every judgment admitting a will to record, or rejecting it. 4859 provides that, when an appeal is taken to the Circuit Court, all necessary parties shall be brought before the court, and that either party may demand a jury to try the question whether the paper produced is or is not the last will of the testator; and it is further provided in the same section that, if no jury is demanded, the court shall determine that question, and that the final decision given shall be a bar to any other proceeding to call the probate or rejection of the will in question. 4861 provides that any person interested at the time of the final decision in the Circuit Court, who resided out of the State, and was proceeded against by warning order only, and any other person interested who was not a party to the proceeding by actual appearance, or being personally served with process, may, within three years after such final decision in the Circuit Court, by petition in equity, impeach the decision, and have a retrial of the question of probate.
*667It will be observed that section 4850 provides that an appeal may be taken to the Court of Appeals from every judgment of the Circuit Court admitting a will to record, or rejecting a will, and that section 4859 provides that the final decision of the Circuit Court determining the question of will or no will shall be a bar to any other proceeding to call the probate or rejection of the will in question, subject, however, to the right of appeal to the Court of Appeals, as provided for in section 4850. It is evident from the whole context of these provisions of the statute that the final decision contemplated is such a final judgment as determines whether the paper offered for probate is the true will of decedent, or that it is not, from which judgment an appeal would lie; and in order to make effectual these provisions of the statute, which give to the final decision of a court probating a will the effect of a judgment in rem, so as to bind parties in interest not before the court, the requirements of the statute as to the method of procedure must be adhered to, and the fact as to whether the paper is the last will of decedent must be determined by a bona fide■ trial, either by the court or by a jury. We can not believe that it was the purpose of the statute to permit parties to an appeal of this character to enter into such agreement with each other as to take from the court the consideration and determination of the question which the appeal was prosecuted to decide, so as to deprive parties equally interested in the question, but who are not before the court, and have not been consulted about the proposed agreement, of the right to have the qxiestion passed on in one of the modes provided for by statute. In our opinion, the agreement which was entered up as a judgment of the court is not such a final determin*668ation of the question as prevents other parties in interest from prosecuting the appeal provided by law.
The next error complained of is that the court erred in instructing the jury upon the question of undue influence, it being insisted that there is no evidence in the record to justify such an instruction. The record does not bear out this broad assertion, as there is evidence which conduces to show that deceased had frequently stated — and had done so up to within a short time of her death — that she did not intend to make any will; and the fact that she postponed this important matter until within a few hours of dissolution is corroborative of this testimony. This paper was not executed until deceased had taken up her abode in the home of her daughters, and there is testimony conducing to show that their influence over her was very great. The undue influence contemplated by law is often exceedingly difficult to establish by proof. It, of necessity, depends largely upon circumstantial evidence. As said by this court in Fry v. Jones, 95 Ky., 149 [24 S. W., G; 44 Am. St. R., 20G]: “No general rule may be laid down by which this obnoxious force may be detected. * * * Manifestly, this must be done by that tribunal to which is afforded opportunity of meeting the witnesses face to face, and hearing them testify. Before such, the general bearing and conduct of the witnesses, and especially the mental characteristics of those charged with having controlled another, may become matters of personal observation and oversight. To a jury of the vicinage, therefore, must be left, in a large measure, the detection of this refined and subtle power. They may not determine its presence without evidence of it, but we may well hesitate to determine the absence of such evidence when, in their wisdom, it is found to be present.” The question of undue influence was not prominent, and was *669not the point on which this case turned, but we can not say that there was not enough proof to authorize an instruction on the question.
The main ground relied on by appellant, and that to which most of the proof was directed, was that testator, at the time she executed the paper in contest, did not- have sufficient capacity to do so; and it is urged by counsel that the verdict of the jury was so flagrantly at variance with the weight of the evidence on this point that it is the duty of this court to reverse the judgment, and grant a new trial, for this reason. The testimony as to mental capacity to execute the paper is conflicting, and the duty of «determining the question is one which the law imposes upon a jury; and the statute provides that the same effect shall be given to their verdict in a will case as in any other civil proceeding. See Ky. Stat., section 4850. We are not authorized to ignore the testimony of quite a number of witnesses, including a brother and a nephew of the deceased, several reputable physicians, and her nearest neighbors, who testify to facts conducing to show that, for several years prior to the execution of the paper in contest, deceased had at times been subject to hallucinations, which could only be the offspring of a mind diseased, and who are emphatic in the expression of the opinion that, by reason of mental infirmities, she was incompetent to execute a will. It is impossible for this court to determine the degree of weight which shall be attached to the testimony of individual witnesses. This must be relegated to the sound discretion of the jury, who have the opportunity to see the witnesses and hear them testify. And we feel, after a careful and thorough consideration of this case, that there is no legal ground for reversal.
Wherefore the judgment is affirmed.