Title: Ad Petrum de Campo Fregoso illustrem Genuae ducem
Subjects: Correspondence, Commerce, Crusades, Sources, Colonies, History
Places: Istanbul (Turkey), Genoa (Italy)
People: Pietro Fregoso (approximately 1417-1459), Flavio Biondo (1392-1459)
Time periods: 13th-15th centuries, 1339-1528, To 1500, Siege, 1453