Grapella dalle Carceri
Grapella dalle Carceri (died 1264) was a Lombard triarch of Negroponte, son of Leone dalle Carceri and son-in-law of Guglielmo I da Verona. After Carintana dalle Carceri died childless in 1255, his family's claim to the northern triarchy helped provoke the War of the Euboeote Succession.
In the 1262 peace, William II recognized Grapella as one of the island's three triarchs. He ruled until his death in 1264.