Peter I of Trani

Peter I, also known as Petronius, was the first Norman count of Trani. He was one of the most prominent of the twelve leaders of the Norman mercenaries serving Guaimar IV of Salerno. Though it had not yet been conquered from the Byzantine Empire, Peter received Trani in the Normans' division of Apulia made at Melfi in 1042. In that same division his brother Walter received Civitate.