@Ajay vikram Singh : Kahn is a Jewish name and probably from German ancestory. Khan is indeed the title of a Mongol Chief. Tamujin retained the title of Genghis Khan even when he had united all the Mongol tribes (including the Tartars),under his banner. All Mongol Rulers (many were Kings),preferred the title of a Khan, even his grandson Kubli Khan who was the Emperor of China. The more famous Halaku Khan( a first cousin of Kubli Khan), the man who destroyed Baghdad never called himself a Prince or a King. Just to be a Khan of the Mongols is a big enough deal. His children accepted Islam and ruled over Central Asia and Iran and the last Mongol ruler was the Khan of Crimea who lost his throne to the Russians. But there was a time when the Khan of Ashtrakhan appointed the Duke of Moscow as his tax collector. Oh, how the mighty have fallen. The Turko-Mongol influence was hugh. Even the Brits recognised it and gave the title of Khan Bahadur and Rai Bahadur (Bahadur being a Mongol word).