Jacob Johan Anckarström
Jacob Johan Anckarström, born 11 may 1762 at Lindos farm, Vallentuna, Uppland — executed on 27 april 1792 at skanstulls galgbacke, Södermalm, is known to posterity as King Gustav III’s assassins. After the assassination, changed the family name to Löwenström and sold the western portion of the estate to create “Löwenströmska” hospital, as a reconciliation gift to Sweden. On the family’s shield of arms in Vallentuna Church he scraped off and deleted the name Anckarström.
On 16 March 1792 Anckarström shot King Gustav III at a masquerade at the Opera in Stockholm. The shot with the scrap metal was fired at his back at close range. Anckarström was arrested the next day for the murder. He confessed guilty at the first hearing, but refused at first stubbornly to some others had been aware of the assassination plans.