Witenagemot (Old English, “meeting of the wise men”), assembly of councillors in Anglo-Saxon England that met to advise the king of judicial and administrative matters. Originally a gathering of all the freemen of a tribe, it eventually became an assembly composed of the ealdormen (Old English, “aldermen”), or local chieftains, the bishops, other high civil and ecclesiastical officials, and sometimes friends and relatives of the king. The witenagemot may have had the power to elect a king, especially if succession was disputed, and it deliberated on all new laws, made treaties, served as a supreme court of justice, authorized the levying of extraordinary taxation and the granting of land, and raised military forces. Each of the several Anglo-Saxon kingdoms had its own witenagemot until the subjugation of them all by Egbert, king of Wessex, between 825 and 829. Thereafter the witenagemot of Wessex gradually developed into a single assembly for the whole country. After the Norman conquest of England in 1066, the witenagemot was superseded by the Great Council, an advisory body to the Anglo-Norman kings.