Editing Robert Curthose (section)

==Descendants==
Robert married Sybilla of Conversano, daughter of [[Geoffrey of Brindisi]], Count of [[Conversano]] (and a grandniece of [[Robert Guiscard]], another Norman duke) on the way back from Crusade; they had one child:{{Sfn|David|1920|p=146}}{{Efn|"Soon after the birth of her (Sibyl's) only child, William the Clito, she died at Rouen, and was buried, amid universal sorrow, in the cathedral church, Archbishop of William Bonne-Ame performing the obsequies."{{Sfn|Lack|2007|p=153}}}}

[[William Clito]], was born 25 October 1102 and became heir to the [[Duchy of Normandy]]. William Clito was unlucky all his life; his attempts to invade Normandy failed twice (1119 and 1125), his first marriage to a [[Sibylla of Anjou|daughter]] of the [[Fulk, King of Jerusalem|Count of Anjou]] was annulled by his uncle's machinations, and even his late inheritance of the county of [[Flanders]] was mishandled. William Clito died in 1128 leaving no issue, thus leaving the field clear in the Norman succession (at least until the death of [[Henry I of England|Henry I]]).

Sybilla, who was admired and often praised by chroniclers of the time, died shortly after the birth of her son. [[William of Malmesbury]] says she died as a result of binding her breasts too tightly; both [[Robert of Torigny]] and [[Orderic Vitalis]] suggest she was murdered by a cabal of noblewomen led by her husband's mistress, Agnes Giffard.

Robert also had at least three illegitimate children: Richard, who died hunting in the [[New Forest]] in May 1100;{{Efn|Like his uncles [[Richard, Duke of Bernay|Richard]], who died earlier, and [[William II of England|William Rufus]], who died later in the same year.}} William, a full brother of Richard;{{Sfn|Aird|2008|pp=96–97}} and a daughter, who married [[Helias of Saint-Saëns]].{{Sfn|Aird|2008|p=126}} William went to the Holy Land after 1106 and was named lord of [[Tartus|Tortosa]], but disappears from the historical record after 1110.{{Sfn|Aird|2008|p=193 note 17}}