after stating the case as above reported, delivered the opinion of the court.

The first question to be considered, is, whether, if the petitioner’s position was true, that he had been convicted twice for the .same offence, and that the court erred in its decision, he could have relief by habeas corpus ?

The objection to the remedy of habeas corpus, of course, Would be, that there was in force a regular judgment of conviction, which could not be questioned collaterally, as it would have to be on habeas corpus. But there are exceptions to this rule which have more than once been acted upon by this court; It is firmly established that if the court which renders a judgment has not jurisdiction to render it, either because the proceedings, or the law under which they are taken, are unconstitutional, or for any other reason, the judgment is void and may be questioned collaterally, and a defendant who is imprisoned under and by virtue of it may be discharged from custody on habeas corpus. This was so decided in the cases of Ex parte Lange, 18 Wall. 163, and Ex parte Siebold, 100 U. S. 371, and in several other cases referred to therein. Ip the case of In re Snow, 120 U. S. 274, we held that only one indictment and conviction of the crime of unlawful cohabitation, under the act of 1882, could be had for the time preceding the finding of the indictment, because the crime was a continuous one, and was *183 but a single crime until prosecuted; that a second conviction and punishment of the same crime, for any part of said period, was an excess of authority on the part of the District Court of Utah; and that a habeas corpus would lie for the discharge of the defendant imprisoned on such conviction. In that case, the habeas corpus was applied for at a term subsequent to that at which thq judgment was rendered; but we did not regard this circumstance as sufficient to prevent the prisoner from having his remedy by that writ.

It is true that, in the case of Snow, we laid emphasis on the fact that the double conviction for the same offence appeared on the face of the judgment; but if it appears, in the indictment, or anywhere else in the record, (of which the judgment is only a part,) it is sufficient. In the present case it appeared on the record in the plea of autre fois convict, which was "admitted to be true by the demurrer of the government. We think that this was sufficient. It was laid down by this court in In re Coy, 127 U. S. 731, 758, that the power of Congress to pass a statute under which a prisoner is held in custody may be inquired into under a writ of habeas corpus as affecting the jurisdiction of the court which ordered his imprisonment; and the court, speaking by Mr. Justice Miller, adds: “ And if their want of power appears on the face of the record of his condemnation, whether in the indictment or elsewhere, the court which has authority to. issue the writ is bound to release him:” referring to Ex parte Siebold, 100 U. S. 371.

In the present case, it is'true, the ground for the habeas corpus was, not the invalidity of án act of Congress under which the defendant was indicted, but a second prosecution and trial for the same offence, contrary to an express provision of the Constitution. In other words, a constitutional immunity of the defendant was violated by the second trial and judgment. It is difficult to see why a conviction and punishment under an unconstitutional law is more violative of a person’s constitutional rights, than an unconstitutional conviction and punishment under a valid law. In the first case, it is true, the court has no authority to take cognizance of the case; but, in the other, it has no authority to render judgment *184 against the defendant. This was the case in Ex parte Lange, where the court had authority to hear and determine the case, but we held that it had no authority to give the judgment it did. It was the same in the case of Snow: the court had authority over the case, but we held that it had no authority to give judgment against the prisoner. He was protected by a constitutional provision, securing to him a fundamental right. It was no.t a case of mere error in law, but a case of denying to a person a constitutional right. And where such a case appears on the record, the party is entitled to be discharged from, imprisonment. The distinction between the case of a mere error in law, and of one in which the judgment is void, is pointed out in Ex parte Siebold, 100 U. S. 371, 375, and is illustrated by the case of Ex parte Parks, as compared with the cases of Lange and Snow. In the case of Parks there was an alleged misconstruction of a statute. ¥e held that to be a mere error in law, the court having jurisdiction of the case. In the cases of Lange and Snow, there was a , denial or invasion of a constitutional right. A party is entitled to a habeas corpus, not merely where the court is without jurisdiction of the cause, but where it has no constitutional authority or power 'to condemn the prisoner. As said by Chief Baron Gilbert, in a passage quoted in Ex parte Parks, 93 U. S. 18, 22, “ If the commitment be against law, as being made by one who had no jurisdiction of the cause, or for a matter for which by law no man ought to be punished, the court are to discharge.” This was said in reference to cases which- had gone to conviction and sentence. Lord Hale laid down the same'doctrine in almost the same words. 2 Hale’s Pleas of the Crown, 144. And why should not such-a rule prevail in favor em libertatis f If we have seemed to hold the contrary in any case, it has been from inadvertence. The law could hardly be stated, with more categorical accuracy than it is in the opening sentence of Ex parte Wilson, 114 U. S. 417, 420, where Mr. Justice Gray, speaking for the court, said: “ It is well settled by a series of decisions that this court, having no jurisdiction of criminal cases by writ of error or appeal, cannot discharge on habeas corpus a person imprisoned under *185 the sentence of a Circuit or District Court in a criminal case unless the sentence exceeds the jurisdiction of that court, or there is no authority to hold him under the sentence.” This proposition, it is true, relates to the power of this court to discharge on habeas corpus persons sentenced by the Circuit and District Courts; but, with regard to the power of discharging on habeas corpus, it is generally true that, after conviction and sentence, the writ only lies when the sentence exceeds the jurisdiction of the court, or there is no' authority to hold the defendant under it. In the present case, the sentence given was beyond the jurisdiction of the court, because it was against an express provision of the Constitution, which bounds and limits all jurisdiction.

Being of opinion, therefore, that habeas corpus was a proper remedy for the petitioner, if the crime of adultery with which he was charged was included in the crime of unlawful cohabitation for which he was convicted and punished, that question is now to be considered.

. We will revert for a moment to the case of In re Snow. Three crimes of unlawful cohabitation were charged against Snow, in three indictments, the crimes being laid continuous with each other, one during the year 1883, one during 1884, and one during 1885. We held that they constituted but a single crime. In the present case there were two indictments; one for unlawful cohabitation with two women down to May 13th, 1888, and the other for adultery with one of the women the following day, May 14th, 1888. If the unlawful cohabitation continued after the 13th of May, and if the adultery was only a part of, and incident to it, then an indictment for the adultery was no more admissible, after conviction of the unlawful cohabitation, than a second indictment for unlawful cohabitation would have been ; and- for the very good reason, that the first indictment covered all continuous unlawful cohabitation dovrii to the time it Avas found. The case Avould then be exactly the same as that of In re Snow. By Avay of illustrating the argument Ave quote from the opinion in that case. . Mr. Justice Blatchford delivering the opinion of the court, said: “ The offence of cohabitation, in the sense of this *186 statute, is committed if there is a living or dwelling together as husband and wife. It is inherently a continuous offence, having duration; and not an offence consisting of an isolated ■ act. That it was intended in that sense in these indictments is shown by the fact that in each the charge laid is that the defendant did on the day named and ‘ thereafter and continuously,’ for the time specified, ‘live and cohabit with more than one woman, to wit, with ’ the seven women named, and, ‘ during all the period aforesaid ’ ‘ did unlawfully claim, live and cohabit with all of said women as his wives.’ Thus, in each indictment, the offence is laid as a continuing one, and a single one, for all the time covered by the indictment; and, taking the three indictments together, there is charged a continuing offence for the entire time covered by all three of the indictments. There was but a single offence committed prior' •to the time the indictments were found. . . . On the same principle there might have been an indictment covering, each of the thirty-five months, with imprisonment for Seventeen years and a half, and fines amounting to $10,500, or even an indictment covering every week. . . . It is to prevent such an application óf penal laws, that the rule has obtained that a continuing offence of the character of the. one in this case can be committed but once, for the purposes of indictment or prosecution, prior to the time the prosecution is instituted.” These views were established by an examination of many authorities.

Now, the petitioner, in his plea, averred in terms that the unlawful cohabitation, with which he was charged in the first indictment, continued without intermission .up to the time of finding that indictment, covering the time within which the adultery was laid in the second indictment. He also averred that 'the two indictments were found against him upon the . testimony of the same witnesses, on one oath and one examination as to the alleged offence, covering the entire time specified in both indictments. This plea was demurred to by the prosecution, and the demurrer was sustained. The averments of the plea, therefore, must be taken as true. And, assuming them to be true, can it be doubted that the adultery charged *187 in the second indictment was an incident and part of the unlawful cohabitation? We have no doubt of it. True, in the case of Snow,' we held that it was not necessary to prove sexual intercourse in order to make out a case of unlawful cohabitation; that living together as man and wife was sufficient ; but this was only because proof of sexual intercourse would have been merely cumulative evidence of the fact. Living together as man and wife is what we decided was meant by unlawful cohabitation under the statute. Of course, that includes sexual intercourse. And this was the integral part of the adultery charged in the second indictment; and was covered by and included in the first indictment and conviction. The case was the same as if the first indictment had in terms laid the unlawful cohabitation for the whole period preceding the finding of the indictment. The conviction on that indictment was in law a conviction of a crime which was continuous, extending over the whole period, including the time when the adultery was alleged to have been committed. The petitioner’s sentence, and the punishment he underwent on the first indictment, was for that entire, continuous crime. It included the adultery charged. To convict and punish him for that also was a second conviction and punishment for the same offence. ’Whether an acquittal would have had the same effect to bar the second indictment is a different question, on which we express no opinion. We are satisfied that a conviction was a good bar, and that the court was wrong in overruling it. We think so because the material part of the adultery charged was comprised within the unlawful cohabitation of which the petitioner was already convicted and for which he had suffered punishment.

The conclusion we have reached is in accord with a proposition laid down by the Supreme Judicial Court of Massachusetts in the case of Morey v. Commonwealth, 108 Mass. 433, 435. The co'urt there says, by Mr. J ustice Gray : “ A conviction of being a common seller of intoxicating liquors has been held to bar a prosecution for a single sale of such liquors within the same time, upon the ground that the lesser offence, which is fully proved by evidence of the mere fact of unlawfully mak *188 ing a sale, is merged in the greater offence;' but an acquittal of the offence of being a common seller does not have the like effect. Commonwealth v. Jenks, 1 Gray, 490, 492; Commonwealth v. Hudson, 14 Gray, 11; Commonwealth v. Mead, 10 Allen, 396.” Whilst this proposition accords so nearly with our own views, it is but fair to say that the decision in Morey v. Commonwealth is the principal one relied on by the government to sustain the action of the District Court of Utah in this case. Morey was charged under a statute in one indictment with lewdly and lasciviously associating and cohabiting with a certain female to whom he was not married; and in another indictment he was charged with committing adultery with the same person on certain days within the period of the alleged cohabitation. The court held that a conviction on the first indictment was no bar to the second, although proof of the same acts of unlawful intercourse was introduced on both trials. The ground v/f the decision was, that the evidence required to support the two indictments was not the same.' The court said: “ A conviction or acquittál upon one indictment is no bar to a subsequent conviction and sentence upon another, unless the evidence required to support a conviction upon one of them would have been sufficient to warrant a conviction upon the other. The test is not, whether the defendant has already been tried for the same act, but whether he has been put in jeopardy for the same offence. A single act may be an offence against two statutes; and if each statute requires proof of an additional fact' which the other does not, an acquittal or conviction under either statute does not exempt the defendant from prosecution and punishment under the other.” p. 434. We think, however, that that case is distinguishable from the present. The crime .of loose and lascivious association and cohabitation did' not. necessarily imply sexual intercourse, like that of living together as man and wife, though strongly presumptive of it. But be . that as it may, it seems to us very clear that where, as in this case, a person has been tried and convicted for a crime which has various incidents included in it, he cannot be a second time tried for one of those incidents without being twice put in jeopardy for the same offence.

*189 It may be contended that adultery is not an incident of unlawful cohabitation, because marriage of one of' the parties must be strictly proved. To this it m'ay be answered, that whilst this is true, the other ingredient (which is an incident of unlawful cohabitation) is an essential and principal ingredient of adultery ; and, though marriage need not be strictly proved on a charge of unlawful cohabitation, yet it is well known that the statute of 1882 was aimed against polygamy, or the having of two or more wives; and it is construed by this court as requiring, in order to obtain a conviction under it, that the parties should live together as husband and wives.

It is familiar learning that there are many cases in which a conviction or an acquittal of a greater crime is a bar to a subsequent prosecution for a lesser one. In Mr. Wharton’s Treatise on Criminal Law, vol. 1, § 560, the rule is stated as follows, to wit: “ An acquittal or conviction for a greater offence is a bar to a subsequent indictment for a minor offence included in the former, wherever, under the indictment for the greater offence, the defendant could have been convicted of the less; ” and he instances several cases in which the rule applies; for example, “ An acquittal on an indictment for robbery, burglary, and larceny, may be pleaded to an indictment for larceny of the same goods, because upon the former indictment the defendant might have been convicted of larceny.” “ If one be indicted for murder, and acquitted, he cannot be again indicted for manslaughter.” “If a party charged with the crime of murder, committed in the perpetration of a burglary, be generally acquitted on that indictment, he cannot afterwards be convicted of a .burglary with violence, under 7 Win. IV and 1 Vic. c. 86, 2, as the general acquittal on the charge of murder would be an answer to that part of the indictment containing the allegation of violence.” “ An acquittal for seduction is a bar to an indictment for fornication with the same prosecutrix.” “ On the same principle, in those States where, on an indictment for adultery, there could be a conviction for fornication, • an acquittal of adultery is a bar to a prosecution for fornication.” It will be observed that all these instances are supposed cases of acquittal; and in order that an acquittal may be a bar *190 to a subsequent indictment for the lesser crime, it would seem to be essential that a conviction of such crime might have been had under the indictment for the greater. If a con viction might have been had, and was not, there was an implied acquittal. But where a conviction for a less crime cannot be had under an indictment for a greater which includes it, there it is plain that while an acquittal would not or might not be a bar, a conviction of the greater crime would involve the lesser also, and would be a bar; and then the proposition first above quoted from the opinion in Morey, v. Commonwealth would apply. Thus, in the case of The State v. Cooper, 1 Green, N. J. Law, 361, where the defendant was first indicted and convicted of arson, and was afterwards indicted for the murder of a man burnt and killed in the fire produced by the arson, the Supreme Court of New Jersey held that the conviction of the arson was a bar to the indictment for murder, which was the result of the arson. So, in State v. Nutt, 28 Vermont, 598, where a person was convicted of being a common seller of liquor, it was held that he could not afterwards be prosecuted for a single act of selling within the same period. “ If,” said the court, “ the government see fit to go for the offence of being a ‘ common seller,’ and the respondent is adjudged guilty, it must, in a certain sense, be considered as a merger of all the distinct acts of sale up to the filing of the complaint, and the respondent cannot be punished but for one offence.” Whereas, in Commonwealth v. Hudson, 14 Gray, 11, after an acquittal as a common seller, it was held that the defendant might be indicted for a single act of selling during the same period. See 1 Bishop’s Crim. Law, 5th ed. § 1054, etc.

The books are full of cases that bear more or less upon the subject we are discussing. As our object is simply to decide the case before us, and not to write a general treatise, we content ourselves, in addition to what has already been said, with simply announcing our conclusion, which is, that the conviction of the petitioner of the crime of unlawful cohabitation was a bar to his subsequent prosecution for the crime of adultery; that the court was without authority to give judgment and sentence in the latter case, and should have vacated *191 and set aside the same when the petitioner applied for a habeas corpus; and that the writ should have been granted and the petitioner discharged.

The judgment of the District Court is reversed, and the cause remanded, with directions to issue a habeas corpus as prayed for by the petitioner, and proceed thereon according to law.