Hugh the Great was the duke of the Franks and count of Paris. He was the most powerful magnate in France.
Hugh as depicted in a 14th century family tree of the Robertians
Robert I was the elected King of West Francia from 922 to 923. Before his election to the throne he was Count of Poitiers, Count of Paris and Marquis of Neustria and Orléans. He succeeded the overthrown Carolingian king Charles the Simple, who in 898 had succeeded Robert's brother, king Odo.
Robert I as depicted in a 14th century family tree of the Robertians