Before a person authorized by law to issue marriage licenses may issue a marriage license, each applicant for a license shall provide a birth certificate or other satisfactory evidence of age and, if the applicant is a minor, the approval required by 40-1-213.
Mont. Code Ann. § 40-1-203
Proof of age
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.