Man sentenced to 20 years for sexual assault of teen in Dodge County

The 33-year-old Waupun man was convicted of 2nd Degree Sexual Assault of a Child

Jan. 30, 2026 at 6:07pm

A 33-year-old Waupun man has been sentenced to 20 years in prison for sexually assaulting a 15-year-old girl, marking the conclusion of a year-long investigation that began when the victim's parents reported the abuse to local authorities.

Why it matters

This case highlights the importance of reporting suspected child abuse and the legal consequences for those who engage in sexual misconduct with minors, as well as the ongoing efforts by law enforcement to protect vulnerable members of the community.

The details

Alan W. Shierling Jr. was sentenced on January 28, 2026, in Branch IV of the Dodge County Circuit Court after being convicted of 2nd Degree Sexual Assault of a Child. He will serve 5 years in the Wisconsin State Prison system followed by 15 years of extended supervision upon release. In addition to the prison sentence, Shierling Jr. was required to register as a lifetime sex offender. The case originated on January 23, 2025, when the Waupun Police Department received a report of an alleged sexual assault involving a minor. During their investigation, detectives uncovered evidence of grooming behavior and learned that Shierling Jr. had proposed to the underage victim without parental consent.

  • On January 23, 2025, the Waupun Police Department received a report of an alleged sexual assault involving a minor.
  • On February 17, 2025, law enforcement officials conducted a traffic stop of Shierling Jr.'s vehicle in Rubicon with assistance from the Dodge County Sheriff's Office.
  • On January 28, 2026, Shierling Jr. was sentenced to 20 years in prison for sexually assaulting a 15-year-old girl.

The players

Alan W. Shierling Jr.

A 33-year-old Waupun man who was convicted of 2nd Degree Sexual Assault of a Child and sentenced to 20 years in prison.

Waupun Police Department

The law enforcement agency that received the initial report of the alleged sexual assault and conducted the investigation.

Dodge County Sheriff's Office

The law enforcement agency that assisted the Waupun Police Department in conducting the traffic stop of Shierling Jr.'s vehicle.

Dodge County District Attorney's Office

The office that assisted the Waupun Police Department throughout the investigation and court proceedings.

Victim

A 15-year-old girl from Rubicon who was sexually assaulted by Shierling Jr.

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What they’re saying

“This case demonstrates our commitment to protecting the children in our community.”

— Bobby Williams, Lieutenant of Investigations, Waupun Police Department

What’s next

The judge in the case will decide on Tuesday whether or not to allow Walker Reed Quinn out on bail.

The takeaway

This case highlights the importance of reporting suspected child abuse and the legal consequences for those who engage in sexual misconduct with minors, as well as the ongoing efforts by law enforcement to protect vulnerable members of the community.