Mont. Code Ann. § 85-2-132

When a petition under 85-2-131 is filed in the district court, the court or the judge shall designate some newspaper of general circulation in the county that is most likely to give all interested parties notice of the proceedings and shall order that notice be published in that newspaper as provided in this section. The judge may require any other notice that seems reasonable and shall fix a time at which objections to the granting of the petition for the change of name must be heard. A copy of the petition, together with a notice of the time set for hearing objections, must be published in the newspaper designated by the court or judge for that purpose at least once a week for 4 successive weeks, and other notice of the proceedings must be given that the court or judge may require.