BILLINGS -- One of two Billings brothers convicted of raping a young girl multiple times over the course of a decade was sentenced Monday to prison.
Robert Calvin, 39, was sentenced in Yellowstone County District Court to 50 years at the Montana State Prison with 25 years suspended.
Calvin was convicted at his July trial of two counts of sexual intercourse without consent and one count of sexual assault.
The victim in the case was sexually abused from the ages of 3 to 13 by Calvin and his brother, William, who pleaded guilty to the crimes.
William Calvin was sentenced to five years in a Montana Department of Corrections pre-release program.
At sentencing for Robert Calvin, prosecutors recommended a sentence of 80 years in prison.
"This is a person who has flown under the radar for most of his life and has been accused of abusing multiple children," said the prosecutor.
At trial, jurors learned that Calvin had molested a young girl repeatedly, threatening her to comply with his constant demands.
The victim testified that the abuse ruined her life and made it difficult for her to trust other men.
Defense attorneys requested a much more lenient sentence of 10 years with five suspended, arguing that Calvin has taken responsibility for his actions.
Calvin became emotional when he spoke to Judge Michael Moses.
"I'm sorry for what I did to (the victim),” said Calvin. “I am sorry for all the victims. I take full responsibility, I was wrong and it kills me."
Calvin admitted at his sentencing hearing that he sexually abused multiple children.
He was only charged with crimes against a single victim, though the special agent tasked with investigating the crimes testified Monday about other victims, as well.
"I have no doubt that there are kids we missed in this case," said FBI Agent Brandon Walter.
The sexual abuse took place starting in 1997 and lasting many years.
The case was not filed against the two brothers until nearly two decades later when the victim was an adult.
Judge Moses said he was encouraged that Calvin, who was designated a low-risk offender by a psycho-sexual evaluator, was taking responsibility for his actions. But he said the crimes Calvin committed warrant prison time, unlike his brother’s sentence.
"These offenses are as violent as they can be, including homicide,” said Moses. “There's no offense more violent than sexually assaulting a child."
Calvin must complete sexual offender treatment while in prison before he is released.