Lemuel and Julia Redd of Monticello pleaded guilty to custodial interference for attempting to prevent their daughter, Julianna, from wedding a man they didn't like, the Deseret Morning News reported.
The couple also will have to pay $2,000 to their new son-in-law for the cost of a pre-wedding meal and Julia Redd will undergo a mental health evaluation.
Fourth District Judge James Taylor, recommended the parents seek therapy.
"This is a tragedy and it clearly involves, in my view, mental illness," Taylor said. "I hope you have figured out you cannot have a family structure with adult children unless you are willing to accept and appreciate their choices."
The couple said they held their daughter overnight in a Grand Junction motel room last August to try to convince her not to marry Perry Myers. The two got married a few days later and she has since given birth to a baby girl.
The couple's daughter told the newspaper she is happy her parents accepted responsibility for their actions by pleading guilty to the misdemeanor charge.