Guy, Duke of Sorrento

Guy's place in history is secured primarily through his relations (by blood and marriage), though his own actions were not inconsequential.

According to John Julius Norwich, he was a "selfless" prince, exhibiting a "moral sense rare for [his] time and position."

The Normans, not bound, they said, by Guy's oath, massacred the four brothers and 36 others, one for each stab wound found in Guaimar's body.

Nevertheless, Gisulf was thankless to his Norman vassals and grew to be a piratical neighbour to all in Southern Italy.

Guy died amidst the breakup of the great principality his brother had forged and he had preserved.