What was the nickname given to the father of Prince Dara?
Sultan Murad Mirza Shahzada Murad Mirza (8 June 1570 – 12 May 1599) was a Mughal prince as the second surviving son of Mughal Emperor Akbar. He was the maternal grandfather of Nadira Banu Begum, wife of Prince Dara (eldest son of emperor Shah Jahan).
Prince Constantine Constantinovich of Russia Prince Constantine Constantinovich of Russia ("Константин Константинович"; 1 January 1891 – 18 July 1918), nicknamed Kostya by the family, was the fourth child of Grand Duke Constantine Constantinovich of Russia by his wife Grand Duchess Elizabeth Mavrikievna of Russia.