What is Gaius Julius Caesar's given name?
Roman nomenclature is somewhat different from the modern English form. Gaius, Iulius, and Caesar are Caesar's praenomen, nomen, and cognomen, respectively. In modern usage, his full name might be something like "Gaius Iulius, the Caesar", where 'Caesar' denoted him as a member of the 'Caesarian' family branch of the 'Iulian' clan, and 'Gaius' was his personal name.