Mont. Code Ann. § 85-2-133

At the time set for hearing or at any time prior thereto, objections may be filed by any person who can, in such objections, show to the court or judge good reason against such change of name. The application and the objections must be heard at such time as the court or judge may appoint. On hearing, the court or judge may examine on oath any of the petitioners, remonstrants, objectors, or other persons touching the application and may make an order changing the name or dismissing the application as to the court or judge may seem right and proper.