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Pierre de Sus served as bailli of the Principality of Achaea following the departure of Prince John of Gravina for Italy in spring 1326. He remained in office until 1327.^[1]

• Bon, Antoine (1969). La Morée franque. Recherches historiques, topographiques et archéologiques sur la principauté d'Achaïe [The Frankish Morea. Historical, Topographic and Archaeological Studies on the Principality of Achaea] (in French). Paris: De Boccard. OCLC 869621129.