At the time and place specified in the notice and upon proof in open court to the satisfaction of the judge thereof that notice of the hearing has been given as required in § 21-37-4 and that the allegations of the petition are true, and that there exists proper and reasonable cause for changing the name of the petitioner, the court or judge shall make an order directing a change of the name of the petitioner and directing that such order be entered by the clerk.
SDCL 21-37-5