Rugg, C. J.
It long has been and is now a rule in the construction of wills that estates thereby created should be treated as vesting immediately unless the testator has manifested an opposite purpose by the use of clear words. Boston Safe Deposit & Trust Co. v. Blanchard, 196 Mass. 35, 38, Welch v. Colt, 228 Mass. 511, 513, 514, and cases collected in each decision. Weston v. Coburn, 227 Mass. 483, 485. “The cardinal rule in the interpretation of wills, to which all other rules must bend, is that the intention of the testator shall prevail, provided that it is consistent with the rules of law.” McCurdy v. McCallum, 186 Mass. 464, 469. Ware v. Minot, 202 Mass. 512, 516. Gorringe v. Mahlstedt, [1907] A. C. 225, 226. If, therefore, the general plan of the *282will and the specific words employed disclose a testamentary design to postpone the vesting of the remainder until the happening of a future event, that design must prevail. These principles govern the case at bar.
The questions now presented for decision are, whether Thomas Mullaney in the residuary clause of his will (1) created a vested or a contingent remainder in his brothers and sister of the whole blood, and (2) used the word “children” in a sense broad enough to include grandchildren.
The residuary clause is in these words: "Fifth: — All my real and other property I give to my beloved Wife for and during the term of her natural life; and at her death I give the same in equal shares to my several brothers and my sister, to the exclusion of my brother Patrick Mullaney, and to the children of any of said brothers or sister who may have deceased, by right of representation, to the exclusion of said Patrick as heir of my said estate from or through any of my other brethren or sister or their children: to have and to hold the same after the death of my Wife in fee simple as aforesaid.” It was held, when the case was here before as reported in 230 Mass. 245, that the brothers and sisters of the half blood were not included within the scope of this clause.
1. Two desires appear to have influenced the testator in framing this clause. One was to give his wife the use of the remainder of his estate during her life. That desire is neutral so far as concerns the points to be decided. The other dominating desire, and seemingly much the more imperious of the two, was to exclude from all benefaction his brother Patrick. This fixed discrimination is emphasized, not only by excluding him from the classification of his “several brothers and my sister,” but by again excluding him from the possibility of receiving anything through inheritance as heir either from any brother or the sister (if one or more should have deceased before the time for final distribution arrived), or from any child of such deceased brothers or sister. This ruling purpose can be given effect much more easily by treating the remainder as not vesting until the death of the wife. If the remainder be regarded as vesting at the death of the testator, it of course would vest as absolute in remainder subject only to the life estate of the wife. It would be difficult, if not impossible, to prevent its descent to all the heirs of a deceased intestate brother *283or sister by qualifying this absolute right by the exclusion of Patrick as an heir. An absolute gift or conveyance cannot readily be cut down by subsequent inconsistent qualifying words. Kelley v. Meins, 135 Mass. 231. Kemp v. Kemp, 223 Mass. 32. Sherburne v. Littel, 220 Mass. 385, 388. Davis v. Davis, 225 Mass. 311. Ide v. Ide, 5 Mass. 500. If it be treated as vested, then any one of the brothers or the sister who survived the testator might sell his interest in the land and it would be hard, if not wholly impracticable, to trace the fund into which the remainder thereby might be converted. Moreover, the intention to exclude his brothers and sisters of the half blood would be more certainly executed by treating the remainder as contingent until the termination of the life estate. The presumption that a vested remainder is intended gains strength from the fact, when it exists, that the provision is for the benefit of direct descendants. Boston Safe Deposit & Trust Co. v. Nevin, 212 Mass. 232, 238. That factor is absent here. The gift over being to the survivors of a class, its members cannot be ascertained with certainty until the end of the life estate. Smith v. Rice, 130 Mass. 441. The idea of contingency springing from the main plan to exclude Patrick is confirmed by the words that the habendum is to take effect “ after the death” of the widow and that the gift over is “at her death.” Heard v. Read, 169 Mass. 216. Wason v. Ranney, 167 Mass. 159. Hall v. Farmer, 229 Mass. 103. The gift over, being in substance and effect to the survivors of a class, has a tendency to indicate the time of the widow’s death as the moment for vesting. Coveny v. McLaughlin, 148 Mass. 576. Sias v. Chase, 207 Mass. 372, 375. It follows that the remainder did not vest until the death of the widow.
2. The meaning of the word “children” in the residuary clause in our opinion excludes grandchildren who are the children of deceased children. The ordinary signification of “child” or “children” is immediate offspring in the first degree as distinguished from more remote descendants. Houghton v. Kendall, 7 Allen, 72, 75. Bigelow v. Morong, 103 Mass. 287. Davis v. New York Life Ins. Co. 212 Mass. 310, 313. Boston Safe Deposit & Trust Co. v. Nevin, 212 Mass. 232, 236, 237. See Welch v. Colt, 228 Mass. 511, 514; Adams v. Law, 17 How. 417. This is its primary sense. Cases have frequently arisen, however, where *284a more generous significance has appeared to be required in order to carry out a presumed testamentary design and to prevent what was thought to be the unintended disinheritance of grandchildren whose parents have deceased. In such instances the word has been treated as comprehending grandchildren or as equivalent to issue. Bowker v. Bowker, 148 Mass. 198, 203. In re Smith, 35 Ch. D. 558. In re Corringe, [19063 1 Ch. 341. The true rule for interpreting the word is the familiar rule which prevails as to the construction of wills. The fundamental object is to ascertain the real purpose of the testator from all the sentences and words he has used, giving them so far as possible their natural meaning and common signification, but reading them in the light of their context, of the knowledge of material surrounding facts possessed by the testator at the time he executed the instrument, and of the subject matter and the persons to whom his language is to be applied, all construed to effectuate, so far as reasonably practicable, the general and dominating testamentary aims. Under this rule words are not to be extended beyond their ordinary sense unless otherwise the manifest wish of the testator will be thwarted. In the case at bar there are children of a deceased brother to take, and it is not necessary to expand the meaning of the word in order to carry out the will. The word does not here refer to descendants of the testator, but to collateral kindred. There is nothing about the will importing an intention to use the word in any other than its ordinary sense. The circumstance that the remainder created by the clause is contingent rather than vested tends toward the conclusion that the word “children” was used in its common meaning. No irrational result follows from interpreting the word in the usual way. So far as can be discerned from other parts of the will, it well may be that the testator intended precisely the distribution which will follow from attributing to the word its accurate and popular significance. No phrase or expression can be laid hold of as indicating an opposite purpose. The case on this point falls within the class of cases illustrated by Houghton v. Kendall, 7 Allen, 72, and the other cases heretofore cited with it. Lawrence v. Phillips, 186 Mass. 320. Bragg v. Carter, 171 Mass. 324. In re Atkinson, [1918] 2 Ch. 138. See Small v. Jose, 86 Maine, 120, and Winsor v. Odd Fellows’ Benefit Association, 13 R. I. 149, 150.
*285The result is that the order for a decree must be modified by striking out paragraphs Second, Third and Fifth, and by substituting paragraphs omitting all reference to the grandchildren and excluding them from the distribution. The details of the decree are to be fixed in the Superior Court.
So ordered.