Strawn took his then-14-year-old daughter to Missouri in August 2015, where he allegedly allowed his daughter to marry then-24-year-old Aaron Seaton, who had reportedly raped and impregnated her just two months before.
Strawn's daughter, who has not been named in news reports, had a miscarriage in October. The marriage has since been annulled.
Seaton was also arrested and pleaded guilty in April to raping Strawn's daughter. He was sentenced to up to 15 years behind bars.
Related: See what's inside a rape kit:
Father took teenage daughter out of state to marry her rapist
A sexual assault evidence kit is logged in the biology lab at the Houston Forensic Science Center in Houston on Thursday, April 2, 2015. The new attention to sexual assault kits stems from a combination of factors: the persistence of advocacy groups, investigative media reports, the willingness of rape survivors to speak out and political support from statehouses up to the White House. (AP Photo/Pat Sullivan)
Instructions sit next to pipettes at a station in the biology lab at the Houston Forensic Science Center in Houston on Thursday, April 2, 2015. Before DNA, rape kits could be tested for blood group typing, but that was nowhere as definitive and the evidence could broadly exclude or include a suspect _ if one had been identified. DNA proved to be a turning point, but Houston Assistant Police Chief Mary Lentschke notes that police still faced two big obstacles: a shortage of both money and crime lab staff. It has cost $500 to $1,500 to test and analyze each kit. (AP Photo/Pat Sullivan)
Forensic analyst India Henry examines cotton swabs from a sexual assault evidence kit in the biology lab at the Houston Forensic Science Center in Houston on Thursday, April 2, 2015. A dramatic shift is taking hold across the country as police and prosecutors scramble to process these kits and use DNA matches to track down sexual predators, many of whom attacked more women while evidence of their crimes languished in storage. Lawmakers, meanwhile, are proposing reforms to ensure this doesn't happen again. (AP Photo/Pat Sullivan)
Wayne County Prosecutor Kym Worthy speaks during an interview about rape kits in Detroit on Monday, April 20, 2015. On the the backlog of rape kit testing, she says, "It shows that we, as this country, do not respect rape victims to the extent that we respect other victims." (AP Photo/Paul Sancya)
Wayne County Prosecutor Kym Worthy looks at documents in Detroit on Monday, April 20, 2015. Her office is working with the Michigan Women's Foundation and the Detroit Crime Commission to raise money to complete the backlog of rape kit testing and investigation and bring suspects to trial. (AP Photo/Paul Sancya)
Vials of evidence in a sexual assault case are labeled and sorted in the biology lab at the Houston Forensic Science Center in Houston on Thursday, April 2, 2015. In some cases, it's simply too late for justice because statutes of limitations have expired. In others, investigators may have to wade through old, often incomplete, police files, search for witnesses and suspects, confront fading memories and persuade survivors to reopen painful chapters of their lives. (AP Photo/Pat Sullivan)
Forensic analyst Karen Gincoo checks a tray of evidence vials from rape kits in the biology lab at the Houston Forensic Science Center in Houston on Thursday, April 2, 2015. In Houston, authorities recently cleared a backlog of nearly 6,700 kits that included cases dating back to the 1980s. The project, which cost about $6 million, turned up 850 matches in a national DNA database. (AP Photo/Pat Sullivan)
This Thursday, April 2, 2015 photo shows an evidence bag from a sexual assault case in the biology lab at the Houston Forensic Science Center in Houston. Legislators in more than 20 states are considering _ and in some cases, passing _ laws that include auditing all kits and deadlines for submitting and processing DNA evidence. (AP Photo/Pat Sullivan)
Vials of evidence from rape kits are labeled and sorted for testing in the biology lab at the Houston Forensic Science Center in Houston on Thursday, April 2, 2015. In resurrecting old crimes, investigators have detected an alarming pattern: Many rapists are repeat offenders. (AP Photo/Pat Sullivan)
ADVANCE FOR USE SUNDAY, MAY 31, 2014 AND THEREAFTER - A small piece of cotton from a swab in a sexual assault evidence kit is placed into a vial for testing in the biology lab at the Houston Forensic Science Center in Houston on Thursday, April 2, 2015. (AP Photo/Pat Sullivan)
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Seaton first met Strawn's daughter when the two families went into business together, according to The Rexburg Standard Journal.
The convicted rapist reportedly began taking advantage of the teenager while she was drunk. But during his time in court, Seaton offered a number of excuses for why he raped Strawn's daughter.
"The responses you gave — that you did not know what you did was wrong, it was [an[ accident, no one was hurt, you didn't plan it, you made a mistake, didn't know how it happened and that the victim was overly affectionate — is hardly a glowing report," Judge Gregory Moeller said during the court proceedings. "It suggests you are completely unaccountable for your actions."
Moeller also seemed disgusted by Seaton painting himself as the girl's savior.
"Attempting to now present yourself as some kind of hero for trying to protect a pregnant teenager by marrying her yourself — I completely reject that as an explanation," Moeller said. "This didn't happen once; it happened multiple times, and you clearly groomed the victim."
Strawn, despite his involvement, seemed to regret that he had encouraged the marriage.
"I made the wrong decision," he said during his trial. "I love my daughter very much and I would never do anything to intentionally harm her."
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