http://en.wikipedia.org/wiki/Robert_of_Worms

Robert III was the Count of Worms and Rheingau of the illustrious Frankish family called the Robertians. He was the son of Robert of Hesbaye.

His son was Robert the Strong. His niece was Ermengard, wife of the Frankish emperor Louis the Pious. A nephew was Chrodogang, Archbishop of Metz and abbot of the Lorsch Abbey. An uncle of Robert is Count Cancor, founder of the Lorsch Abbey. Via Robert the Strong he was grandfather of two kings of Western Francia named Odo and Robert. He was the great-grandfather of Hugo Capet, the founder of the Capetian dynasty that ruled France until the French Revolution.