What was the nickname given to the father of Prince Dara?
Shah Jahan Shahab-ud-din Muhammad Khurram (5 January 1592  – 22 January 1666) better known by his regnal name Shah Jahan (Persian: "King of the World"), was the fifth Mughal emperor, who reigned from 1628 to 1658.
Tarkhan Tarkhan (Old Turkic "Tarqan"; Mongolian: "Darqan" or "Darkhan"; Persian: ترخان‎ ‎ ; ; Arabic: طرخان‎ ‎ ; alternative spellings "Tarkan", "Tarkhaan", "Tarqan", "Tarchan", "Turxan", "Tarcan, Tárkány, Tarján, Torgyán" or "Turgan") is an ancient Central Asian title used by various Turkic peoples, Indo-Europeans (i.e. Iranian, Tokharian, Punjabi), and by the proto-Mongols, Hungarians and Mongols. Its use was common among the successors of the Mongol Empire.