Mirza (Persian: میرزا, Turkish: Merza or Mirza. Uzbek: mirzo, Russian: мурза, Circassian: мырзэ), (common variance in Tatar nobility as Morza) is of Persian origin, denoting the rank of a high nobleman or Prince. It is usually translated into English as a royal or imperial Prince of the Blood. It signified male-line descent and relationship to the Imperial Families of Turkey, Persia and later South Asia and was the title borne by members of the highest aristocracies in Tatar states, such as Khanate of Kazan, Khanate of Astrakhan and in the Russian Empire (Under Catherine the Great's rule the Murzas gained equal rights with the Russian nobility). In fact, Prince Felix Yusupov, the nephew-in-law of Tsar Nicholas II of Russia was descended from Abdul Mirza, the first Prince Yusopov.

Read more about MIRZA:  Etymology