Guy, Duke of Sorrento
Guaimar IV of Salerno's brother
Guy was the duke of Sorrento from 1035, the brother of Guaimar IV of Salerno, father-in-law of William Iron Arm and William of the Principate, and brother-in-law of Humphrey of Hauteville. He was the son of Guaimar III and Gaitelgrima. Wikipedia
Died: 1073
Children: Maria di Sorrento, Guaimaro di Sorrento, and Guida di Sorrento
Grandchild: Richard of Salerno
Parents: Guaimar III of Salerno and Gaitelgrima di Benevento
Siblings: Guaimar IV of Salerno