Was there a marital discord between you? You cannot be deprived of the right to enjoy the custody of your children. If you want to bring your wife back then you may move court and file a case for resumption of conjugal duties. In addition thereto, you may also apply for child custody. Since her whereabouts are not known to you it will not be possible to bring her to court as court notices will have to be served on her. You should thus strive to first locate her.