Roger is a UK-based writer and historian and a graduate of Cambridge University. As the child of a naval family, his fascination with the Mediterranean world started early, on the island of Malta. He has lived in Istanbul, walked across much of western Turkey, and traveled widely throughout the region. His particular interests are the Byzantine, Venetian, and Ottoman empires, seafaring, and eyewitness history. He is the author of three books on the empires of the Mediterranean and its surroundings: 1453: The Holy War for Constantinople (2005), Empires of the Sea (2008) and City of Fortune: How Venice Won and Lost a Naval Empire (2012). His latest book is Conquerors: How Portugal Forged the First Global Empire (2015).