Casepin
Back to cases

Case file

Murder of Knut Grøte

SOLVED1863Christiania (now Oslo), Norway3 SOURCESUPDATED JUL 2026
Illustrative

Background

Knut Grøte was a farmer from Lærdal Municipality who arrived in Christiania (now Oslo), the capital of Norway, in late July 1863. He brought several barrels of salmon, which he sold at the marketplace.

Murder and investigation

On 10 August 1863, a Prussian man named Friedrich Wilhelm Priess ordered a large quantity of fish from Grøte, pretending to be a sailor and asking that the salmon be brought out to a ship in the harbor. Priess, along with Danish shoemaker Knud Christian Frederik Simonsen from Odense, rented a rowing boat. The two men met Grøte, who followed them to the boat with the salmon, and the three rowed out into the fjord. Near the island of Hovedøya, Grøte was killed — he was shot and stabbed with a knife. The robbery yielded 140 speciedaler. The killers threw the corpse into the sea, attached to a stone with rope.

Grøte was reported missing the day after the killing. One week later, his body was found floating in the fjord. Investigators determined that the rope used to weigh down the body had belonged to the rented boat, which helped identify the perpetrators. By that time, Priess and Simonsen had already left the country, but they were later found in Copenhagen, arrested, and brought back to Christiania.

Conviction and execution

Priess and Simonsen were convicted and condemned to death by the Supreme Court on 10 February 1864. Both men were publicly beheaded at Etterstad on 19 April 1864, in front of a crowd of about 5,000 spectators. These executions were the last two commissions carried out by executioner Samson Isberg.

Priest Johann Henrik Møhne assisted Priess at the scaffold, reading the verse Romans 6:23; as Møhne recited the Lord's Prayer, Isberg beheaded Priess. After the scaffold was cleaned, priest Jørgen Tandberg assisted Simonsen, who spoke to the public about his difficult life; Tandberg then read the verse Genesis 9:6, and as he recited the Lord's Prayer, Isberg beheaded Simonsen.

Historian Simon Christian Hammer, writing on the history of Christiania, characterized the case as possibly the most sensational affair of its kind in the city during the 19th century.

Key facts

Victims
Knut Grøte
Date
1863
Location
Christiania (now Oslo), Norway
Case status
solved

Case timeline

No timeline entries are attached yet.

Best coverage

No approved coverage links are attached yet.

People

  • Knud Christian Frederik Simonsen

    CONVICTED

    Danish shoemaker from Odense convicted of murdering and robbing Knut Grøte; executed by beheading on 19 April 1864.

  • Knut Grøte

    VICTIM

    Farmer from Lærdal Municipality, killed and robbed near Hovedøya on 10 August 1863.

  • Friedrich Wilhelm Priess

    CONVICTED

    Prussian man convicted of murdering and robbing Knut Grøte; executed by beheading on 19 April 1864.

Roles reflect public records and court outcomes at the time of writing — supporting citations are on file under Sources.

Places

Common questions

What happened to the victim?
Farmer Knut Grøte was robbed and killed in a rowing boat off Christiania in August 1863; two men were later convicted and publicly beheaded in 1864.
Where did the murder happen?
Christiania (now Oslo), Norway.
Who was convicted?
Knud Christian Frederik Simonsen (Danish shoemaker from Odense convicted of murdering and robbing Knut Grøte; executed by beheading on 19 April 1864.) and Friedrich Wilhelm Priess (Prussian man convicted of murdering and robbing Knut Grøte; executed by beheading on 19 April 1864.).
What is the current status of the case?
Status: solved. Last verified July 2026.

Sources

  1. OFFICIAL / AGENCYKnut Grøte murder in Oslo historyOslo Municipality Education Administration · 2026-07-13
  2. PRESSDa hodene rullet i NorgeJuristen · 2026-07-11
  3. ENCYCLOPEDICMurder of Knut GrøteWikipedia · 2026-07-10

Record history

Last verified against sources
JUL 13, 2026
  1. JUL 13, 2026Correction

    Catalog QA: Added the documented murder date.