No sale of the real estate of an infant, convict, or insane person, heretofore made and confirmed, under and by the judgment, order or decree of a court of competent jurisdiction, nor any conveyance of such real estate made or to be made under any such judgment, order, or decree, and no lease, mortgage, or trust deed upon the real estate of any such person, heretofore made under any such judgment, order or decree, shall in any manner be affected or invalidated by reason of the bill or petition in the case not having been verified, or by reason of the persons who would be the heirs or distributees of such infant, convict or insane person, if he were dead, not having been made parties to the suit or proceedings, or by reason of any other error or defect in the proceeding or deed, not affecting the very right of the case, or by reason of any action of the court in dealing with, in such suit or proceedings, matters which would otherwise have been the subject matter of a separate suit under section thirteen, article ten, chapter forty-four of this code. All such sales and conveyances are hereby legalized and made valid; and all such leases, mortgages and deeds of trust, heretofore made, or to be made under any such judgment, order or decree in those cases where the welfare and property of the person under legal disability has been sufficiently protected are hereby legalized and made valid. Sales, leases, mortgages, or deeds of trust heretofore made pursuant to judgments, orders or decrees in suits or proceedings under this article shall not hereafter be invalidated for the reason that the court, in disposing of the case, failed to require such persons, property and estate to be burdened with the expense of a separate suit or proceedings under section thirteen, of article ten, of chapter forty-four of this code, where it appears from the record that the court did adequately protect the welfare and property of the person under legal disability.