St. Brice's Day Massacre

Timeline

1. 1002Winchester · HampshireÆthelred II issued an edict on St. Brice's Day ordering all Danish men hunted down and killed on a set date nationwide, claiming the Danes plotted regicide. The decision reflected the crown's deep distrust of Danish settlers and mercenaries in the realm.
2. 1002St. Frideswide's Church, Oxford · OxfordOxford townsfolk burned alive the Danes who had taken refuge in St. Frideswide's Church. According to the chronicles, the Danish princess Gunhild (Sweyn's sister) was also killed in England, becoming the direct motive for Sweyn's revenge.
3. 1002–1003England · EnglandThe massacre reached London and elsewhere but failed to eradicate the Danish military threat. Sweyn cited it as justification for invading England, launching a large-scale expedition the next year that sharply worsened England's situation.