*613The opinion of the court was delivered by
Kingman, C. J.:The question at issue in the ease depends on who are the heirs of Clement, the son of Clement, one of the reservees under the treaty of June 3d 1825 between the United States and the Kansas Nation of Indians. By the 6th article of that treaty one mile square each was reserved “ to Adel and Clement, the two children of Clement.” Adel was to have the first square mile on the half-breed tract on the west, and Clement the second. On the 26th of May, 1860, congress passed an act vesting the title to these lands in the reservees, and in case of the death of any reservee, then in the heirs of such deceased reservee, the heirs to be determined, by the Secretary of the Interior. On the 17th of July 1862 congress passed a joint resolution repealing so much of the act last mentioned as authorized the Secretary of the Interior to decide who are the heirs of the deceased reservees. By the treaty, the act, and the joint resolution, the fee became perfect in the several reservees and their heirs. About the year 1835 Clement the reservee died without wife or issue. His mother, Me-ha-ton-ga, died in the winter of 1861; and Clement the elder died in July 1854. His sister Adel, afterwards Mrs. Bellmard, took possession of the land, and sold it to various parties, who are the defendants in error, and are in possession of the land. "Who are really the heirs of Clement the reservee, becomes a question of much difficulty, owing to the complicated domestic relations of Clement Lassert, his reputed father. The plaintiffs in error claim that at one period of his life Clement Lassert the elder became the husband of an Indian woman named Me-ha-ton-ga, and that while they were living together as husband and wife Adel and Clement were born unto them; that afterwards they were divorced, and Lassert married Julia Eoy, by whom he had nine children. Julia, now Mrs. Pappan, and her children, and their vendees, are the plaintiffs in error in this case, claiming to be the heirs of Clement the reservee. "Whether they are such heirs depends upon the disputed questions as to the marriage of Lassert and Me-ha-ton-ga, and if *614they were married, then whether they were divorced prior to the marriage of Lassert and Julia Roy. If Lassert and the Indian woman were not married when she bore the children Adel and Clement, then Lassert could not be the heir of the the reservee Clement, even though he may have begotten him, until there was a failure of heirs on the maternal side. If the parties were married and not divorced, then the marriage of Lassert and Julia Roy had no validity, and neither she nor her children became the heirs of Lassert; therefore the marriage and divorce became the particular points of controversy in the action. It devolved upon the plaintiffs in error to show both facts or they would not recover. The burden of proof was on them. The testimony was voluminous, uncertain, and conflicting. It is not pretended that there was any marriage ceremony, but that the parties went together and lived together as man and wife in the Indian country, and without the limits of any organized state or territory. As to the manner of their life, there is much discrepancy which it is not necessary to detail. It is certain that Clement the elder claimed the reservees as his children, and cared for and educated them as his children, even after his marriage with Julia Roy. It is certain that he “threw off” the Indian woman. There was much evidence as to what constituted marriage and divorce among the Indian tribes, and especially among the Kansas Nation. This evidence is more curious than instructive, and like the evidence on the other points is not easily reconcilable. These questions were left to the jury, under the instructions of the court. After stating the situation of the parties and their respective claims, the court gave this instruction:
“ If the jury find from the evidence that Clement Lassert and Me-ha-ton-ga were married according to customs and usages of the Kansas Nation of Indians in the Indian country, then the laws of this state recognize such marriage as legal, and the progeny of such marriage relation is legitimate and capable of inheriting from the father; and if they further find from the evidence that after Adel and Clement were born Clement Lassert and Me-ha-ton-ga were divorced according to the customs and usages of the Kansas Nation of Indians in the Indian country, *615then the law recognizes such divorce as legal, so that the alleged second wife of Clement, Julia, would take on the death of her husband Clement Lassert, one-half of whatever estate descended to him from Clement the reservee in preference to Me-ha-ton-ga, and the other half would go in equal proportions to the children of Clement Lassert by Me-ha-ton-ga and his children by Julia; in other words, the legitimate children of a father inherit equally from him though their mothers be different women. The law deals not with forms and ceremonies, but looks rather to substance, having its foundation in the intention of the parties to the marriage relation; and evidence of continuous cohabitation as man and wife by a man and woman furnishes prima faoie evidence of their marriage, which may be repelled however by any evidence which tends to show that they cohabited only from motives of lust, and that a marriage in fact was not intended by either or both of the parties cohabiting.
“ On the other hand, if Clement Lassert and Me-ha-ton-ga had not, or if neither of them had, any intention of marrying, and did not in fact do so according to the customs and usages of the Kansas Nation of Indians, or by the law of any state or territory, or the custom or usage of any other tribe or nation of Indians, then Clement Lassert, nor his wife Julia, nor their children, can inherit from Clement the reservee. Again, even though Clement Lassert and Me-ha-ton-ga were married in fact, if they were not divorced according to the customs and usages of the Kansas Nation of Indians, nor by any competent authority of any state or territory, and he assumed to marry Julia Koy, and did cohabit with her for a period of years, and they had children born unto them during such cohabitation while yet Me-ha-ton-ga lived, then and in such case the marriage with Julia was void, and neither she, nor his children by her, can inherit from him.
“If there was no marriage between Clement Lassert and Me-ha-ton-ga, then the verdict must be for the defendants in possession of the premises. If there was a' marriage between them, and yet no divorce, then the verdict must be for the defendants in possession. But if there was a marriage between them, and a subsequent divorce, and you find Clement the reservee was their legitimate son, and is now dead leaving no wife or issue, that Clement Lassert subsequent to the divorce married Julia Eoy, and had children as above, then you will examine the topic of estoppel.”
Under these instructions the jury found for the defendants *616in possession. It is impossible to read tbe evidence and not perceive that there is evidence to-support the verdict, and at least equal in weight to that produced by the plaintiffs in error. Nor do we think that there was essential error in the instructions. If the courts are to decide that a marriage is a prerequisite to the legitimacy of children, then the court laid down the rules for the ascertainment of that fact as favorably as could be asked: See Johnson v. Johnson, adm’r, 30 Mo., 71. The instructions did not make any ceremony a necessity to the validity of the marriage, but put the question as to whether the relations of Lassert the elder and Me-ka-ton-ga were those of marriage or lust fairly to the jury, under instructions that gave them no chance to hesitate upon forms and ceremonies, but demanded their attention to the substantial facts.
II. Upon the trial of the cause the defendants, besides the question of heirship, relied upon the fact that the plaintiffs by their acts were estopped from claiming the land even if they showed themselves the true heirs; and upon this point the evidence was voluminous, and the instructions very full and minute. We might well avoid an examination of these instructions, as it is apparent that the jury decided the case without ever reaching the question of estoppel, as they were specially instructed, and the matter was emphasized by repetition that the estoppel did not in any event apply to Ellen Bevard and others, and if they found the heirship for the plaintiffs in error, they must find for the excepted persons regardless of the question of estoppel. The jury were also charged that they must first decide the question of heirship, and if the decision was in favor of the defendants in error, they need not examine the question of estoppel. They found for such defendants and against Ellen Bevard and others, against whom there was no pretense of estoppel. It is certainly apparent- from this that the jury decided the case on the issue of heirship only, and any error in the charge as to estoppel could not have injuriously affected the plaintiffs in error. We may add that we have- found nothing in the charge as to the law of estoppel that is objectionable. The court, however, after stating that the burden of proof as to *617heirship was on the plaintiffs in error, and that they must show their right by a preponderance of evidence, stated as to the-ground of estoppel the burden of proof was on those who asserted it, and then gave this guide to the jury:
“If the plaintiff, independent of the subject of estoppel, made out his ease by a preponderance of the evidence, it then devolves upon the defendants alleging the estoppel to make out that fact by evidence on that subject equal m weight to that of the plaintiff before a verdict can be rendered for them. If on this subject the plaintiff’s evidence preponderates also, when coupled with the antecedent finding just alluded to, then the plaintiff has the case. In other words, the plaintiff recovers' by the preponderance of the evidence on all the issues. The-defendants in possession of the premises defeat a recovery when-they interpose evidence equal in weight to that of the plaintiff!”
This is evidently not the law. The correct rule is that the obligations of proving any fact lies upon the party who relies upon that fact, and affirmatively asserts it in the pleadings. In this case the matter of estoppel was relied on by the defendants, and they were bound to establish that proposition by a preponderance of evidence, and the jury should have been so told. But for the reasons above stated, this error is not deemed material in this ease, as it is clear that the jury must have, determined the case upon the issue of heirship.
III. During the trial various exceptions were taken which we will now notice: The first of these was in the empaneling of the jury. The facts are these: Twelve men were placed in the box and sworn to answer questions as to their competency.' When the first one was called the court required the parties to' accept or challenge him for cause, or peremptorily, before any other person was called up. The statutes at that time had made no direct provisions as to the manner of the empaneling the jury. The method adopted did not prevent a fair and impartial jury from being obtained, and we cannot see that either party was prejudiced by it. See The State v. Potter, 18 Conn., 166. The present code provides a different method.
IV. Another exception was the permitting a certain Indian *618to testify. On his voir dire he showed that he had not an accurate idea of an oath, but plainly testified that he knew it would be wrong to tell a lie, and that he supposed he would be hanged if he did so. That he did not know the penalties of perjury, or what perjury was, but that it was bad to speak falsely, and that he believed when he died he would go above. We think the court correctly permitted the witness to testify. The exact extent of intellectual attainments necessary to qualify a person to become a witness cannot be stated precisely. The objection urged to this witness was not a want of sufficient age, or that he was an idiot, or insane, or of weak mind; but that he did not understand the nature and obligation of an oath. He was an uneducated Indian, not deficient in understanding, but uninstructed as to the nature of an oath, and mistaken as to the punishment for perjury, an act which by that name he did not know;(yetf1ie knew that it was wrong to speak falsely, and that he would be punished for so doing. Whether he believed that he would be punished in another life was a matter that could not be inquired into under our constitution. /Sis evidence afterwards given is such as confirms the opinion we have expressed as to his competency.
V. The defendants in error offered in evidence the deposition of Mrs. Julia Pappan. The plaintiffs in error moved to strike out that part of the deposition which is as follows:
“ Clement Lassert my former husband told me always that he never was married to the Indian woman, the mother of Adel and Clement the reservee. Question: State whether he told you so both before and after you married him? Answer: He did both before and after.”
The motion was made on the grounds that the evidence was hearsay, and that it was incompetent for the witness to testify to the communications made to her by her husband during the marriage. The evidence was not objectionable on the grounds that it was hearsay, for while it was literally hearsay it was of a kind authorized by law to be given where the facts of descent and relationship, or of birth, marriage, and death, are in controversy, as in this case: 1 Greenl. Ev., §§ 103, 104. The *619objection on tlie ground that tbe evidence was of statements made to ber by her husband is a question requiring more attention, but there will be found no great difficulty in disposing of it. The rule is well established that the wife cannot be permitted voluntarily, or compelled by authority, to give in evidence communications made to her by her husband, while the marriage relations existed. The reason of the rule is thus stated by Mr. Justice McLean in Stein v. Bowman, 13 Peters, 209: “ This rule is founded upon the deepest and soundest principles of our nature, principles which have grown out of those domestic relations that constitute the basis of civil society, and which are essential to the enjoyment of that confidence which should subsist between those who are connected by the nearest and dearest relations of life. To break down or impair the great principles which protect the sanctities of husband and wife would be to destroy the best solace of human existence.” It is evident that under this rule a portion of the evidence included in the motion was incompetent, and it is as certain that a portion of it was competent. "What Lassert told the witness before their marriage was proper evidence, and should have been admitted. How far the court wais authorized to overrule the objection because it included too much, has often been decided. In general the court is not bound to do more than respond to the motion, and in the terms in which it is made. It is not obliged to modify the propositions submitted by counsel so as to make them fit the case. If they do not fit the ease, that is cause enough to authorize their rejection. If any part of the evidence objected to is competent, the court may, on a motion to exclude the whole, exclude the part that is incompetent, but is not obliged to do so: Elliott v. Piersoll, 1 Peters, 328, 338. In this case the court could not exclude that portion of the testimony that was competent, and included in the motion of counsel, and therefore had a right to overrule the motion. Another reason may be given why the admission of the incompetent testimony could not affect this case on error: The competent testimony and the incompetent were precisely the same. What Lassert said after his marriage with *620the witness, was just wbat be said before. Tbe evidence given of wbat was said before marriage was competent; and even if tbe motion bad been to tbat part tbat was incompetent, and tbe court bad overruled tbe motion, tbe ruling would undoubtedly bave been error, bút as tbe same evidence would bave remained after correcting tbe error we could not say tbat tbe plaintiffs in error were prejudiced by it. Before passing from tbis point it may be. observed' tbat in Fuller v. Randall, 2 Moore & Payne, 20, tbe court beld tbat declarations by a woman of wbat ber first busband'bad. to say as to wbo would inherit bis estate, were beld admissible to show tbe affinity of tbe person so mentioned to tbe. husband. Tbis ease would support tbe ruling of tbe court on tbe ground tbat tbe whole evidence was admissible; but it does.not appear from tbe report tbat tbe question was considered -as to the-competency of the witness to prove tbe fact, but was decided only on tbe ground tbat such evidence from any proper source was competent. There were objections to-other portions-of tbe deposition of Mrs. Pappan which ar.e disposed of by tbe observations ah’eady made.
YI. Yarious witnesses .were allowed to testify tbat they bad beard Adel' Bellmard declare that she and Clement were illegitimate, or that Clement Lassert and'Me-ha-ton-ga, tbe mother, were never .married. . All; these declarations were made before suit brought, and while she was in possession of tbe land, and was setting tbe same. They were receivable in evidence, not as tbe declarations .of- a grantor .-in favor of a grantee, but to show after her death .wbat ber own views were of ber family relations: 1 Greenl.. By., §'13J. - Many more questions as to tbe admission of testimony ‘were made. Some of them are covered by-the principles already>stated; some are'immaterial, and tbe others are in. reference- ta tbe question of estoppel, and need not be examined here. -Tbe.judgment is affirmed.
All tbe Justices concurring.-