The Stockholm Bloodbath (; ) was a trial that led to a series of executions in Stockholm between 7 and 9 November 1520. The event is also known as the Stockholm massacre. The events occurred after the coronation of Christian II as the new king of Sweden, when guests in the crowning party were invited to a meeting at Tre Kronor castle. Archbishop Gustav Trolle, demanding economic compensation for things such as the demolition of Almarestäket's fortress, questioned whether the former Swedish regent Sten Sture the Younger and his supporters had been guilty of heresy. Supported by canon law, nearly 100 people were executed in the days following the meeting despite promises of amnesty. Among those killed were many people from the aristocracy who had been supporting the Sture Party in the previous years. Thereafter King Christian II became known in Sweden as ('Christian the Tyrant'). Background Political factions in Sweden The Stockholm Bloodbath was a consequence of conflict between Swedish pro-unionists (in favour of the Kalmar Union, then dominated by Denmark) and anti-unionists (supporters of Swedish independence), and also between the anti-unionists and the Danish aristocracy, which in other aspects was opposed to King Christian. The anti-unionist party was headed by Sten Sture the Younger, and the pro-unionist party by the Archbishop Gustavus Trolle. Military interventions of King Christian King Christian, who had already taken measures to isolate Sweden politically, intervened to help Archbishop Trolle, who was under siege in his fortress at Stäket. However, he was defeated by Sture and his peasant soldiers at Vedila, and forced to return to Denmark. A second attempt to bring Sweden back under his control in 1518 was also countered by Sture's victory at Brännkyrka. Eventually, a third attempt made in 1520 with a large army of French, German and Scottish mercenaries proved successful. Sture was mortally wounded at the Battle of Bogesund on 19 January 1520. The Danish army, unopposed, was approaching Uppsala, where the members of the Swedish Riksdag of the Estates had already assembled. The senators agreed to render homage to Christian, on condition that he give a full amnesty for past actions and a guarantee that Sweden should be ruled according to Swedish laws and customs. A convention to this effect was confirmed by the king and the Danish Privy Council on 31 March. Sture's widow, Lady Kristina, was still resisting in Stockholm with support from the peasants