'The Sister of King Sweyn murdered in the General Massacre of the Danes by the Saxons, on the Eve of St. Brice, 1002', c1890. The St. Brice's Day massacre, the killing of Danes in England, 13 November 1002 in Oxford, was ordered by King ?thelred the Unready and included the death of Gunhilde, sister of Sweyn I of Denmark. From "Cassell's Illustrated History of England".