Nicknamed the Pious, Robert (b. c. 972-1031) was the son of Hugh Capet, the namesake of the Capetians, father of Henri, King of France, and father of Adela (or Adelaide), the mother-in-law of William the Conqueror.
Hugh (c. 939-996) is the namesake of the Capetian dynasty, the first king. The Capetians reigned in an all-male succession to 1328. Through collateral lines his descendants ruled up to and after the French Revolution. Text of the oath he swore at his coronation is included.