Mirza Mehdi Khan Astarabadi (Persian: میرزا مهدی خان استرآبادی), also known by his title of Monshi-ol-Mamalek (منشی الممالک), was the chief secretary, historian, biographer, advisor, strategist, friend and confidant of King Nader Shah (r. 1736–1747). He who wrote and accepted the different decisions and files related to the Empire. Source: Wikipedia (en)