In argument before us particular reliance was placed on two decisions of the Full Court of the Family Court, In the Marriage of Gillies and Gillies [26] and Harris and Harris; Re Banaco Pty Ltd [No. 2] [27] . The facts in the former case were rather special, and although Ascot Investments Pty Ltd v Harper is discussed in the judgments, the case was argued before that decision was given. Moreover, in that case the stranger to the marriage (the husband's mother) had herself instituted proceedings in the Family Court, and the statement by Evatt C.J., that the Family Court has power to prevent an abuse of process by restraining a party to its own proceedings from continuing proceedings in another court, has no application in the present case, where Mrs. Green did not begin or intervene in proceedings in the Family Court, but was simply served (if she was served) with process in a matter beyond the Court's jurisdiction. For these reasons it is unnecessary to consider the correctness of the decision in that case. In the second decision, Harris and Harris; Re Banaco Pty Ltd [No. 2], the Full Court of the Family Court dismissed an appeal from a decision of a judge of that Court granting an interlocutory injunction restraining two companies from proceeding with an action in the Supreme Court in which they sought possession of the matrimonial home, which they owned. The home was occupied by the wife and the companies were controlled by the husband's mother. It was not established that the husband had, either in law or in fact, any control over the companies. The majority of the Court (Evatt C.J. and Joske J.) distinguished Ascot Investments Pty Ltd v Harper for two reasons - first, that the decision in that case was not concerned with an interlocutory injunction and, secondly, that a distinction should be drawn between cases in which the third party, affected by an order of the court, is a stranger to the married parties and those in which there is an association of some kind between the third party and one of the parties to the marriage. The third member of the Court, Watson S.J., remarked that Ascot Investments Pty Ltd v Harper was decided before s. 15AA of the Acts Interpretation Act 1901 Cth, as amended, was enacted, and also said that some consideration of s. 33 of the Act might be relevant in further proceedings. I am unable fully to accept the reasoning of the Court in relation to any of these questions. The Court has no wider jurisdiction to grant an interlocutory injunction than to grant a permanent injunction. There is, however, this practical difference, that while the Family Court is exercising its power to determine whether or not it has jurisdiction in a particular case, it may be right to keep matters in statu quo by the grant of an interlocutory injunction. That would be so only while the question whether it had jurisdiction remained in doubt and was being determined, and it goes without saying that if an interlocutory injunction were granted in those circumstances the questions of fact and law on which jurisdiction depended would have to be determined as a matter of the utmost urgency - not after a lapse of two or three months as was proposed in the present case - and that once it appeared that jurisdiction was lacking, the injunction would have to be dissolved, however inconvenient that course might appear. The limits of the power to affect the position of third parties - i.e., persons who are not parties to the marriage - appear from Ascot Investments Pty Ltd v Harper. No distinction can, however, be drawn between the position of third parties who are strangers to the parties to the marriage and those who have some relationship or association with one of them. The fact that a third party is, for example, a parent of one of the parties to the marriage does not in itself expand the power of the Court. Of course if there is some relationship between the third party and one of the married parties the case might come within one of the exceptions recognized in Ascot Investments Pty Ltd v Harper [28] . There is no reason to believe that the application of the provisions of s. 15AA of the Acts Interpretation Act would lead to any different result from that which was reached in Ascot Investments Pty Ltd v Harper. No doubt it is right to say that the Act should be given a construction that would promote its objects and in particular would give the widest possible protection and assistance to the family and to the rights of children of the marriage. However, the objects of the Act do not include the destruction of the rights of third parties. Finally, as has been pointed out in Reg. v Ross-Jones; Ex parte Beaumont [29] , s. 33 of the Act can apply only if the Court already has jurisdiction; its jurisdiction is then extended, as far as is constitutionally permissible, to associated matters. In the present case the proceedings brought by Dr. Marinovich against Mrs. Green were quite outside the jurisdiction of the Court and did not form part of any controversy in relation to which the Court was seized with jurisdiction.