Opinion by

David P. Reighard died testate on December 9, 1913, leaving a widow, wbo still survives, brothers and sisters and their issue and certain of tbe issue of others deceased. By bis will, dated July 10, 1912, after making certain absolute devises and bequests to bis wife, testator placed tbe balance of bis estate in trust, “for a period of ten years from tbe date of my death, or during tbe natural life of my wife, Bell Reighard, should she survive me for a period of over ten years.” This trust was for tbe benefit of decedent’s wife, brothers and sisters, and their issue and certain of tbe issue of others deceased. Testator provided that, “At tbe expiration of tbe trust period aforesaid, tbe balance of my estate shall be divided into seventeen shares...... and distributed ......among my brothers, sisters and nephews in tbe following proportions,” naming tbe persons wbo were to take and tbe shares they were to receive; then tbe will proceeds, “Tbe share or shares of one or more mentioned in this paragraph, dying prior to tbe period of distribution, to vest in tbe issue of tbe one or more so dying.” A fuller record of tbe document will be found in tbe reporter’s notes to Reigbard’s Est., 253 Pa. 43, but tbe above outline is sufficient for a proper understanding of the points raised on tbe present appeal.

An account was filed by tbe trustees under testator’s will, after tbe expiration of ten years from bis death, and, on its adjudication, tbe beneficiaries wbo, if tbe *143 trust then terminated would be entitled to the principal, asked that it be declared determined and the principal distributed to them; this the court below refused to do, and the present appeal by one of those in interest followed.

On a prior appeal, involving the construction of the document now before us, Reighard’s Est., supra, after noting the fact that testator’s widow had refused to take under his will, we said: “The plain and simple scheme of the testator has become inoperative by his wife’s election to take against his will, so far as its provisions affect her, but no farther. He clearly contemplated the contingency of her election not to accept his testamentary provision for her, for, in directing that $50 should be paid monthly during the continuance of the trust to each of two relatives of his wife, he declared that these annuities were to be paid ‘upon the express condition, however, that my wife accepts the provisions made in this will for her, in lieu of dower, and in the event of her refusal to so accept said provisions, then and in that event the bequest to said Louis Lytle and Harry Reifsnyder, and their children, hereinabove contained, shall be void.’ No other provision in the will was to be disturbed by his wife’s election to take against it, and the unavoidable conclusion is that the testator’s intention was that all the provisions in the will, except those relating to his wife and her two relatives, should continue unaffected by her election to take against it: Expressio unius, exclusio alterius. By her election to take against the will the widow of the testator destroyed the trust created for her; but how could that election strike down the trust for others created in terms as clear as those which had created the trust for her? The trust created by the testator was not for her alone, but for others, to continue for them during her natural life; and the intention of her husband is not to be thwarted by refusal to accept the provisions of his will, but is to be given effect under the cardinal rule applicable to every will: *144 Portuondo’s Est., 185 Pa. 472; Gourley’s Est., 238 Pa. 62. Notwithstanding what the widow has done, the clearly expressed intention of her husband must be given effect. During a period fixed by him his beneficiaries, of whom the appellant is one, are not to have any shares in the corpus of one-half of his estate, for his express direction is that it shall be held in trust for them as long as Ms widow shall live. His reason for so directing is immaterial, if he created, as he clearly did, an active trust for the appellant and the other residuary legatees: Spring’s Est., 216 Pa. 529.”

Appellant contends, the point now pressed, — that, on the failure of testator’s widow to take under his will, the period of the trust became limited to ten years (which has now expired), — was not before the court on the prior appeal, inasmuch as the ten-year period had not then come to an end; and, therefore, the matter above quoted is not binding in the instant case. It is unnecessary, however, to consider this contention, for we agree with the construction heretofore placed on testator’s will; and now decide that, notwithstanding the widow’s election to take against the will, she having outlived the period of ten years, the duration of her life marks the extent of the trust.

Appellant argues the present appeal as though in our former opinion we had made the entire construction of the will depend on application of the maxim “expressio unius exclusio alterius,” which is not the case. Our consideration involved the will as a whole; the maxim in question was merely applied as showing that, since testator provided for certain results to ensue from his wife’s failure to take under his will, it was fair to assume that, had he intended other results to follow on that contingency, for instance, the termination of the trust earlier than the death of his wife, he would have said so.

The case before us is not ruled by Disston’s Est., 257 Pa. 537, 541, 543, mentioned in appellant’s brief, nor *145 by other like authorities, which hold that, on the election of a widow to take against her husband’s will, “devises or bequests, subordinate to a life estate in the widow and contingent upon her death, or payment of which is postponed until then, become presently payable,” her election being “equivalent to her death.” In those cases the life of the widow is not expressly used to mark the period of a trust, as in the instant case; and in the Diss-ton opinion we took occasion to indicate that the will here involved as presenting, inter alia, a case where the widow’s election worked no acceleration.

Appellant calls attention to the established rule that, no matter what may be the designated duration of the legal estate given to a trustee, it continues, in equity, only so long as the object sought to be accomplished by the trust demands, and when that demand has been fully satisfied, although the trust may not have ceased by the expiration of time, yet, if all the parties “who are or possibly might be interested in the property,” being sui juris, ask for the determination of the trust, it will be so decreed, citing Baughman’s Est., 281 Pa. 23, 29, and Wood’s Est., 261 Pa. 480 (also see Stafford’s Est, 258 Pa. 595). Here, however, the will expressly provides that the shares of those designated as beneficiaries who may die “prior to the period of distribution” are to “vest in the issue of the one or more so dying”; hence, it cannot be said that all persons “who are or possibly might be interested in the property” have petitioned for the termination of the trust. On the contrary, the will shows a purpose that those to take the principal shall be ascertained at the death of testator’s wife, and not before. Since, under the construction we have put on testator’s written words, there is no way of now telling who those persons, ultimately entitled to the estate (at the death of the widow), will be, the court below did not err in concluding that “no distribution can be made at *146 this time......and [meanwhile] the corpus must remain with the trustees.”

The decree is affirmed, costs to be paid out of the trust estate.