Roll of Honor
Incident
Marsha Peter Larson succumbed to a gunshot wound. He was shot the previous night while trying to quell a disturbance.
The incident occurred when he and several citizens confronted a group of people who had come to town from Boone County to break up a dance.
The Marshal died approximately 24 hours later.
Marshal Larson had served with the Dayton Police Department for 7 years.
Marsha Peter Larson succumbed to a gunshot wound. He was shot the previous night while trying to quell a disturbance.
City Marshal Larson, On today, the 140th anniversary of your death I would just like to say thank you for your service and sacrifice for the citizens of Dayton.
BPA Mike Casey United States Border Patrol(Retired) January 3rd, 2024
In Our Keeping
- Permanent identifier
BO-US-IA-68A7C191- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- April 2, 2026
- Last updated
- July 23, 2026
Honored here by 1 sentinel - 1 tribute.
Are you family? This record can be claimed and maintained by those who knew Peter. Claim this record.
This page is permanent and free. No fee to view it, no advertising, no tracking, and no account required. It will not be taken down.
Tributes
132 years is a long time for a name to go unread. Not today.
City Marshal Larson gave the Dayton Police Department 7 years.
Thank you for your service to the Dayton community. Gone but never to be forgotten.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
City Marshal Peter John Larson is one of 17,623 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 54.2% of all 32,508 officers honored here.
In IA, 129 of 226 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 57.1% of this state's fallen. That is 2.9 percentage points above the national rate of 54.2%.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Peter John Larson's cause is highlighted.
How Peter John Larson Compares
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Peter John Larson is highlighted in Jan.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Peter John Larson was killed by gun; unknown type.