The Assassination
Gustav III's war against Russia and the implementation of the Union and Security Act in 1789 helped to increase a hatred against the king among the nobility that had been growing ever since the coup d'état in 1772. A conspiracy to have the king killed and reform the constitution took place within the nobility in the winter of 1791-92. Among those involved were Jacob Johan Anckarström, Adolph Ribbing, Claes Fredrik Horn, Carl Pontus Lilliehorn and Carl Fredrik Pechlin.
The assassination of the king took place at a masked ball at the Royal Opera House in Stockholm at midnight on 16 March 1792. Gustav had arrived earlier that evening to enjoy a dinner in the company of friends. During dinner, he received an anonymous letter that described a threat to his life (written by the colonel of the Life guards Carl Pontus Lilliehorn), but, as the king had received numerous threatening letters in the past, he chose to ignore it. After dining, he left his rooms to take part in the masquerade. The letter was written in French, and in translation it started: To the King - with the greatest humility.
Pray, allow an unknown whose pen is guided by tactfulness and the voice of conscience, dare take the liberty to inform You, with all possible sincerity, that certain individuals exist, both in the Provinces and here in the City, that only breathe hatred and revenge against You; indeed to the extreme of wanting to shorten Your days, through murder.
They are greatly upset to see this not happening at the last masquerade but they rejoice at the tidings of seeing that there will be a new one today. Bandits do not like lanterns; there is nothing more serviceable for an assassination than darkness and disguise. I dare, then, to appeal to You, by everything that is holy in this world, to postpone this damnable ball, to such times as are more positive for Your present as well as coming benefit. Soon upon entering, he was surrounded by Anckarström and his co-conspirators, Count Claes Fredrik Horn and Count Adolf Ludvig Ribbing. The king was easily spotted, mainly due to the breast star of the Royal Order of the Seraphim that glowed in silver upon his cape. The conspirators were all wearing black masks and accosted him in French with the words:
Bonjour, beau masque ("Good-day, fine masked man")Anckarström moved behind the king and fired a pistol-shot into the left side of his back. The king jumped aside, crying in French:
Ah! Je suis blessé, tirez-moi d'ici et arrêtez-le ("Ah! I am wounded, take me away from here and arrest him!")The king was carried back to his quarters, and the exits of the Opera were sealed. Anckarström was arrested the following morning and immediately confessed to the murder, although he denied a conspiracy until informed that Horn and Ribbing had also been arrested and had confessed in full.
The king had not been shot dead; he was alive and continued to function as head of state. The coup was a failure in the short run. However, the wound became infected, and on 29 March, the king finally died with these last words:
Jag känner mig sömnig, några ögonblicks vila skulle göra mig gott ("I feel sleepy, a few moments' rest would do me good")Ulrica Arfvidsson, the famous medium of the Gustavian era, had told him something that could be interpreted as a prediction of his assassination in 1786, when he visited her anonymously - a coincidence - but she was known to have a large network of informers all over town to help her with her predictions, and she was in fact interrogated about the murder.