Adding to what commenter Causevic had already stated before me:Mirza is actually the short form of the compound name Amīrzāde, which is composed of one Arabic element and one Persian element. The first element is Arabic أمير (amīr) meaning "commander, ruler, prince". This eventually became a military title, which became known in English as 'Emir'. The second element is Middle Persian (zādag) meaning "child". As such, the name literally means "child of the Emir" or "child of the ruler".After Mirza eventually became a title as well, over time the title's meaning was interpreted to be "prince". I suppose one could say that particular meaning is more figurative, since the original meaning is the literal meaning - and thus rather different. [noted -ed]