He later repaid the Vatican by expelling Holy Roman Emperor Henry IV from Rome.  
With a name meaning "wiseacre," this leader struck a deal with Hildebrand, the influential advisor to Pope Nicholas II, at the Council of Melfi.  He later repaid the Vatican by expelling Holy Roman Emperor Henry IV from Rome.  The son of the Tancred of literary fame, he assisted his brothers, William Bras-de-Fer, Drogo, and Humphrey, in ending Byzantine influence over Southern Italy, and later led his sons in repeated, unsuccessful attempts to take Constantinople.  FTP, name this Norman knight who founded the Kingdom of the Two Sicilies
With a name meaning "wiseacre," this leader struck a deal with Hildebrand, the influential advisor to Pope Nicholas II, at the Council of Melfi.  
Robert Guiscard