A guardian shall not apply any portion of the income or the estate for the support or maintenance of any person other than the ward, the spouse, and the minor children of the ward, except upon petition to and prior order of the court after a hearing. A signed duplicate or certified copy of said petition shall be furnished the proper office of the Veterans' Administration and notice of hearing thereon shall be given said office as provided in the case of hearing on a guardian's account or other pleading.