Overview
William Clito (25 October 110228 July 1128) was a member of the House of Normandy who ruled the County of Flanders from 1127 until his death and unsuccessfully claimed the Duchy of Normandy. As the son of Robert Curthose, the eldest son of William the Conqueror, William Clito was seen as a candidate to succeed his uncle King Henry I of England. Henry viewed him as a rival, however, and William allied himself with King Louis VI of France. Louis installed him as the new count of Flanders upon the assassination of Charles the Good, but the Flemings soon revolted and William died in the struggle against another claimant to Flanders, Thierry of Alsace.
Youth
William was the son of Duke Robert Curthose of Normandy and Sibylla of Conversano. His father was the first son of King William the Conqueror of England. His nickname Clito was a Medieval Latin term equivalent to the Anglo-Saxon "Aetheling" and its Latinized form "Adelinus" (used to refer to his first cousin, William Adelin). Both terms signified "man of royal blood" or, the modern equivalent, "prince". It may have been derived from the Latin inclitus/inclutus, "celebrated."
Robert was defeated and captured by his brother King Henry I of England at the Battle of Tinchebrai in 1106. Robert accompanied Henry to Falaise where Henry met his nephew William Clito for the first time. Henry placed his nephew in the custody of Helias of Saint Saens, count of Arques, who had married a natural daughter of Duke Robert, his friend and patron. The boy William stayed in his sister's and Helias's care until August 1110, when the king abruptly sent agents to demand the boy be handed over to him. Helias was at the time away from home, so his household concealed the boy and smuggled him to their master, who fled the duchy and found safety among Henry's enemies.
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