As Duke of Paris, he helped undermine royal power by plotting with the  Normans and the Germans against his overlords, kings Lothair IV and Louis V.  
As Duke of Paris, he helped undermine royal power by plotting with the  Normans and the Germans against his overlords, kings Lothair IV and Louis V.  He did this so effectively, in fact, that his practical power did not  increase at all in 987, when the Carolingian line died out and he inherited  the crown. FTP,identify this monarch, the founder of a dynasty that ruled  France for three hundred years.
As Duke of Paris, he helped undermine royal power by plotting with the  Normans and the Germans against his overlords, kings Lothair IV and Louis V.  He did this so effectively, in fact, that his practical power did not  increase at all in 987, when the Carolingian line died out and he inherited  the crown.
Hugh {Capet}