Alexander III of Macedon (Greek: Αλέξανδρος Γʹ ὁ Μακεδών, Aléxandros III ho Makedȏn; 20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great (Greek: ὁ Μέγας, ho Mégas), was a king (basileus) of the ancient Greek kingdom of Macedon and a member of the Argead dynasty. He was born in Pella in 356 BC and succeeded his father Philip II to the throne at the age of 20. [Source: Wikipedia ]