Died in 1066

Jan 5 Edward the Confessor usually regarded as the last king of the House of Wessex, ruling from 1042 to 1066.
Feb 3 Rostislav of Tmutarakan a landless prince from the Rurikid dynasty of Kievan Rus’. He was baptized as Mikhail. According to the Russian genealogist Nikolai Baumgarten, the mother of Rostislav was Oda of Stade, a daughter of the Stade Count Leopold. That claim is also supported by other historians
Sep 25 Harald Hardrada King of Norway from 1046 to 1066. In addition, he unsuccessfully claimed the Danish throne until 1064 and the English throne in 1066. Prior to becoming king, Harald had spent around fifteen years in exile as a mercenary and military commander in Kievan Rus' and in the Byzantine Empire
Sep 25 Tostig Godwinson an Anglo-Saxon Earl of Northumbria and brother of King Harold Godwinson.
Oct 14 Leofwine Godwinson a younger brother of Harold II of England, the fifth son of Earl Godwin.
Oct 14 Gyrth Godwinson the fourth son of Earl Godwin, and thus a younger brother of Harold II of England. He went with his eldest brother Swegen into exile to Flanders in 1051, but unlike Swegen he was able to return with the rest of the clan the following year. Along with his brothers Harold and Tostig, Gyrth was present at his father's death-bed
Oct 14 Harold Godwinson the last Anglo-Saxon King of England. Harold reigned from 6 January 1066 until his death at the Battle of Hastings on 14 October, fighting the Norman invaders led by William the Conqueror during the Norman conquest of England. His death marked the end of Anglo-Saxon rule over England
Dec 11 Conan II Duke of Brittany Duke of Brittany, from 1040 to his death. Conan was the eldest child and heir of Alan III, Duke of Brittany by his wife Bertha of Blois, and member of the House of Rennes. He was the elder brother of Hawise, who succeeded him as suo jure duchess