May 12 Pope Sylvester II [Gerbert van Aurillac], French scholar and clergyman, 1st French Pope (999-1003), dies at about 57 [exact birthdate unknown]
Nov 13 Gunhilde, daughter of Danish king Harald Bluetooth, killed in the St Brice's Day massacre of Danes in England, prompting her brother Sweyn Forkbeard to swear revenge [1]