This is a bill to enforce a covenant made by the defendant to his wife, the plaintiff’s intestate, in North Carolina, to surrender all his marital rights in certain land of hers. The land is in Massachusetts. The parties to the covenant were domiciled in North Carolina. According to the bill, the wife took steps which under the North Carolina statutes *214gave her the right to contract as a feme sole with her husband as well as with others, and afterwards released her dower in the defendant’s lands. In consideration of this release, and to induce his wife to forbear suing for divorce, for which she had just cause, and for other adequate considerations, the defendant .executed the covenant. The defendant demurs.
The argument in support of the demurrer goes a little further than is open on the allegations of the bill. It suggests that the instrument which made the wife a “ free trader,” in the language of the statute, did not go into effect until after the execution of the release of dower and of the defendant’s covenant. But the allegation is that the last mentioned two deeds were executed after the wife became a free trader, as they probably were in fact, notwithstanding their bearing date earlier than the registration of the free trader instrument. We must assume that at the date of their dealings together the defendant and his wife had as large a freedom to contract together as the laws of their domicil could give them.
But it is said that the laws of the parties’ domicil could not authorize a contract between them as to lands in Massachusetts. Obviously this is not true. It is true that the laws of other States cannot render valid conveyances of property within our borders which our laws say are void, for the plain reason that we have exclusive power over the res. Ross v. Ross, 129 Mass. 243, 246. Hallgarten v. Oldham, 135 Mass. 1, 7, 8. But the same reason inverted establishes that the lex rel sitce cannot control personal covenants, not purporting to be conveyances, between persons outside the jurisdiction, although concerning a thing within it. Whatever the covenant, the laws of North Carolina could subject the defendant’s property to seizure on execution, and his person to imprisonment, for a failure to perform it. Therefore, on principle, the law of North Carolina determines the validity of the contract. Such precedents as there are, are on the same side. The most important intimations to the contrary which we have seen are a brief note in Story, Confl. of Laws, § 436, note, and the doubts expressed in Mr. Dicey’s very able and valuable book. Lord Cottenham stated and enforced the rule in the clearest way in Ex parte Pollard, 4 Deac. 27, 40 et seq.; S. C. Mont. & Ch. 239, 250. So Lord *215Romilly in Cood v. Cood, 33 Beav. 314, 322. So in Scotland, in a case like the present, where the contract enforced was the wife’s. Findlater v. Seafield, Faculty Decisions, 553, Feb. 8,1814. See also Cuninghame v. Semple, 11 Morison, 4462; Erskine, Inst. Bk. 3, tit. 2, § 40; Westlake, Priv. Int. Law, (3d ed.) § 172 ; Rorer, Interstate Law, (2d ed.) 289, 290.
If valid by the law of North Carolina there is no reason why the contract should not be enforced here. The general principle is familiar. Without considering the argument addressed to us that such a contract would have been good in equity if made here, (Holmes v. Winchester, 133 Mass. 140, Jones v. Clifton, 101 U. S. 225, and Bean v. Patterson, 122 U. S. 496, 499,) we see no ground of policy for an exception. - The statutory limits which have been found to the power of a wife to release dower (Mason v. Mason, 140 Mass. 63, and Peaslee v. Peaslee, 147 Mass. 171, 181) do not prevent a husband from making a valid covenant that he will not claim marital rights with any person competent to receive a covenant from him. Charles v. Charles, 8 Grat. 486. Logan v. Birhett, 1 Myl. & K. 220. Marshall v. Beall, 6 How. 70. The competency of the wife to receive the covenant is established by the law of her domicil and of the place of the contract. The laws of Massachusetts do not make it impossible for him specifically to perform his undertaking. He can give a release which will be good by Massachusetts law. If it be said that the rights" of the administrator are only derivative from the wife, we agree, and we do not for a moment regard any one as privy to the contract except as representing the wife. But if then it be asked whether she could have enforced the contract during her life, an answer in the affirmative is made easy by considering exactly what the defendant undertook to do. So far as occurs to us, he undertook three things: first, not to disturb his wife’s enjoyment while she kept her property; secondly, to execute whatever instrument was necessary in order to release his rights if she conveyed; and thirdly, to claim no rights on her death, but to do whatever was necessary to clear the title from such rights then. All these things were as capable of performance in Massachusetts as they would have been in North Carolina. Indeed, all the purposes of the covenant could have been *216secured at once in the lifetime of the wife by a joint conveyance of the property to a trustee upon trusts properly limited. It will be seen that the case does not raise the question as to what the common law and the presumed law of North Carolina would be as to a North Carolina contract calling for acts in Massachusetts, or concerning property in Massachusetts, which could not be done consistently with Massachusetts law.
With regard to the construction of the defendant’s covenant we have no doubt. .It is u to surrender, convey, and transfer to said Kitty T. Poison Stewart, Jr., and her heirs, all the rights of him, the said Henry Stewart, Jr., in and to the lands and property above described, which he may have acquired by reason of the aforesaid marriage, and the said Kitty T. Poison Stewart, Jr., is to have the full and absolute control and possession of all of said property free and discharged of all the rights, claims, or demands of every nature whatsoever of the said Henry Stewart, Jr.” Notwithstanding the decision of the majority in Rochon v. Lecatt, 2 Stew. (Ala.) 429, we think that it would be quibbling with the manifest intent to put an end to all claims of the defendant if we were to distinguish between vested rights which had and those which had not yet become estates in the land, or between claims during the life of the wife and claims after her death. It is plain, too, that the words import a covenant for such further assurance as may be necessary to carry out the manifest object of the deed. See Marshall v. Beall, 6 How. 70 ; Ward v. Thompson, 6 Gill & Johns. 349; Hutchins v. Dixon, 11 Md. 29; Hamrico v. Laird, 10 Yerger, 222; Mason v. Deese, 30 Ga. 308; McLeod v. Board, 30 Tex. 238.
Objections are urged against the consideration. The instrument is alleged to have been a covenant. It is set forth, and mentions one dollar as the consideration. But the bill alleges others, to which we have referred. It is argued that one of them, forbearance to bring a well founded suit for divorce, was illegal. The judgment of the majority in Merrill v. Peaslee, 146 Mass. 460, 463, expressly guarded itself against sanctioning such a notion, and decisions of the greatest weight referred to in that case show that such a consideration is both sufficient and legal. Newsome v. Newsome, L. R. 2 P. & D. 306, 312. Wil*217son v. Wilson, 1 H. L. Cas. 538, 574. Besant v. Wood, 12 Ch. D. 605, 622. Hart v. Hart, 18 Ch. D. 670, 685. Adams v. Adams, 91 N. Y. 381. Sterling v. Sterling, 12 Ga. 201. Then it is said that the wife's agreement in bar of her dower was invalid, because it had not the certificate that she had been examined, etc., as required by the North Carolina statutes annexed to the bill. Whether it was invalid or not, the defendant was content with it, and accepted the execution of it as a consideration. This being so, it would be hard to say that it was not one, even if without legal effect. Whether void or not, it is alleged to have been performed; and finally, if it was void, it was void on its face, as matter of law, and the husband must be taken to have known it, so that the most that could be done would be to disregard it; if that were done, the other considerations would be sufficient. See Jones v. Waite, 5 Bing. N. C. 341, 351. Demurrer overruled.
Field, C. J.I cannot assent to the opinion of a majority of the court. By our law husband and wife are under a general disability or incapacity to make contracts with each other. The decision in Whitney v. Closson, 138 Mass. 49, shows, I think, that the contract sued on would not be enforced if the husband and wife had been domiciled in Massachusetts when it was made. As a conveyance made directly between husband and wife of an interest in Massachusetts land would be void although the parties were domiciled in North Carolina when it was made, and by the laws of North Carolina were authorized to make such a conveyance, so I think that a contract for such a conveyance between the same persons also would be void. It seems to me illogical to say that we will' not permit a conveyance of Massachusetts land directly between husband and wife, wherever they may have their domicil, and yet say that they may make a contract to convey such land from one to the other which our courts will specifically enforce. It is possible to abandon the rule of lex rel sitce, but to keep it for conveyances of land and to abandon it for contracts to convey land seems to me unwarrantable.
The question of the validity of a mortgage of land in this Commonwealth is to be decided by the law here, although the *218mortgage was executed elsewhere where the parties resided, and would have been void if upon land there situated. Goddard v. Sawyer, 9 Allen, 78. “It is a settled principle, that ‘ the title to, and the disposition of, real estate must be exclusively regulated by the law of the place in which it is situated.’ ” Cutter v. Davenport, 1 Pick. 81. Osborn v. Adams, 18 Pick. 245. The testamentary execution of a power of appointment given by will in relation to land is governed by the lex situs, or the law of the domicil of the donor of the power. Sewall v. Wilmer, 132 Mass. 131.
The plaintiff, merely as administrator, cannot maintain the bill. Caverly v. Simpson, 132 Mass. 462, 464. The plaintiff must proceed on the ground that Mrs. Henry Stewart, Jr. acquired by the instruments executed in North Carolina the right to have conveyed or released to her and her heirs by her husband all the interest he had as her husband in her lands in Massachusetts; that this right descended on her death to her heirs, according to the law of Massachusetts ; and that the plaintiff, being an heir, has acquired the interest of the other heirs, and therefore brings the bill as owner of this right. The plaintiff, as heir, claims by descent from Mrs. Stewart, and if the contract sued on is void as to her, it is void as to him.
It is only on the ground that the contract conveyed an equitable title that the plaintiff as heir has any standing in court. His counsel founds his argument on the distinction between a conveyance of the legal title to land and a contract to convey it. If the instrument relied on purported to convey the legal .title, his counsel in effect admits that it would be void by outlaw. He accepts the doctrine stated in Ross v. Ross, 129 Mass. 243, 246, as follows: “ And the validity of any transfer of real estate by act of the owner, whether inter vivas or by will, is to be determined, even as regards the capacity of the grantor or testator, by the law of the State in which the land is situated.” As a contract purporting to convey a right in equity to obtain the legal title to land, he contends that it is valid. I do not dispute the cases cited with reference to contracts concerning personal property, but the rule at common law in regard to the capacity of parties to make contracts concerning real property, as I read the cases and text-hooks, is that the lex situs governs. *219Cochran v. Benton, 126 Ind. 58. Doyle v. McGuire, 38 Iowa, 410. Sell v. Miller, 11 Ohio St. 331. Johnston v. Gawtry, 11 Mo. App. 322. Frierson v. Williams, 57 Miss. 451.
Dicey on the Conflict of Laws is the latest text-book on the subject. He states the rule as follows.
Page lxxxix. “ (B). Validity of Contract, (i) Capacity.
“ Rule 146. Subject to the exceptions hereinafter mentioned, a person’s capacity to enter into a contract is governed by the law of his domicil (lex domicilii) at the time of the making of the contract.
“ (1) If he has such capacity by that law, the contract is, in so far as its validity depends upon his capacity, valid.
“ (2) If he has not such capacity by that law, the contract is invalid.
“Exception 1. A person’s capacity to bind himself by an ordinary mercantile contract is (probably) governed by the law of the country where the contract is made (lex loci contractas) [?].
“ Exception 2. A person’s capacity to contract in respect of an immovable (land) is governed by the lex situs.”
Page xcii. “ (A). Contracts with regard to Immovables.
“ Rule 151. The effect of a contract with regard to an immovable is governed by the proper law of the contract [?].
“ The proper law of such contract is, in general, the law of the country where the immovable is situate (lex situs).”
On page 517 et seq. he states the law in the same way, with numerous illustrations, but with some hesitation as to the law governing the form of contracts to convey7 immovables. See page xc., Rule 147, Exception 1. For American notes with cases, see page 527 et seq. In the Appendix, page 769, note (B), he discusses the subject at length, and with the same result. Some of the cases cited are the following: Succession of Larendon, 39 La. An. 952; Besse v. Pellochoux, 73 Ill. 285; Fuss v. Fuss, 24 Wis. 256; Moore v. Church, 70 Iowa, 208; Heine v. Mechanics & Traders Ins. Co. 45 La. An. 770; First National Bank of Attleboro v. Hughes, 10 Mo. App. 7; Ordronaux v. Rey, 2 Sandf. Ch. 33; Adams v. Clutterbuck, 10 Q. B. D. 403 ; Chapman v. Robertson, 6 Paige, 627, 630.
Phillimore in 4 Int. Law, (3d ed.) 596, states the law as follows:
*220" DCCXXXV. 1. The case of a contract respecting the transfer of immovable property illustrates the variety of the rules which the foreign writers upon private international law consider applicable to a contract to which a foreigner is a party : they say that,
“ i. The capacity of the obligor to enter into the cóntract is determined by reference to- the law of his domicil.
“ii. The like capacity of the obligee by the law of his domicil.
“ iii. The mode of alienation or acquisition of the immovable property is to be governed by the law of the situation of that property.
“ iv. The external form of the contract is to be governed by the law of the place in which the contract is made.
“It is even suggested by Fcelix, that sometimes the interpretation of the contract may require the application of a fifth law.
“ DCOXXXYI. The Law of England, and the Law of the North American United States, require the application of the lex rel sites to all the four predicaments mentioned in the last section.
“ DCCXXXYII. But a distinction is to be taken between contracts to transfer property and the contracts by which it is, transferred. The former are valid if executed according to the lex loci contractus ; the latter require for their validity a compliance with the forms prescribed by the lex rel sites. Without this compliance the dominium in the property will not pass.”
To the same effect as to the capacity of the parties are Rattigan, Priv. Int. Law, 128 ; Whart. Confl. of Laws, (2d ed.) § 296; Story, Confl. of Laws, (8th ed.) §§ 424-431, 435; Rorer, Interstate Law, 263; Nelson, Priv. Int. Law, 147, 260. See Westlake, Priv. Int. Law, (3d ed.) §§ 156, 167 et seq.
On reason and authority I think it cannot be held that, although a deed between a husband and his wife, domiciled in North Carolina, of the rights of each in the lands of the other in Massachusetts, is void as a conveyance by reason of the incapacity of the parties under the law of Massachusetts to make and receive such a conveyance to and from each other, yet, if there are covenants in the deed to make a good title, the covenants can be specifically enforced by our courts, and a convey*221anee compelled, which, if voluntarily made between the parties, would be void.
I doubt if all of the instruments relied on have been executed in accordance with the statutes of North Carolina. By § 1828 of the statutes of that State set out in the papers, the wife became a free trader from the time of registration. This I understand is January 7, 1893. Exhibit B purports to have been executed before that time, to wit, January 4, 1893. There does not appear to have been any examination of the wife separate and apart from her husband, as required by § 1835. If Exhibit B fails, there is at least a partial failure of consideration for Exhibit C. It is said that an additional consideration is .alleged, viz. the wife’s forbearing to bring a suit for divorce. Whether this last is a sufficient consideration for a contract I do not consider. It is plain enough that there was an attempt on the part of the husband and wife to continue to live separate and apart from each other without divorce, and to release to each other all the property rights each had in the property of the other. If the release of one fails, I think that this court should not specifically enforce the release of the other ; mutuality in this respect is of the essence of the transaction. If the husband owned lands in Massachusetts, and had died before his wife, I do not think that Exhibit B, even if it were executed according to the statutes of North Carolina, and the wife duly examined and a certificate thereof duly made, would bar her of her dower. Our statutes provide how dower may be barred. Pub. Sts. c. 124, §§ 6—9. Exhibit B is not within the statute. See Mason v. Mason, 140 Mass. 63. Ante-nuptial contracts have been enforced here in equity so as to operate as a bar of dower, even if they did not constitute a legal bar. Jenkins v. Holt, 109 Mass. 261. But post-nuptial contracts, so far as I am aware, never have been enforced here so as to bar dower, unless they conform to the statutes. Whitney v. Closson, 138 Mass. 49. Whatever may be true of contracts between husband and wife made in or when they are domiciled in other jurisdictions, so far as personal property or personal liability is concerned, I think that contracts affecting the title to real property situate within the Commonwealth should be such as are authorized by our laws. I am of opinion that the bill should be dismissed.