[1] His mother, Helen Kasminsky, was from the Russian aristocracy in Petrograd.
[1] He was the younger brother of Nader Jahanbani who was executed in February 1979 after the Iranian revolution.
[1][2] Jahanbani and Shahnaz Pahlavi, the eldest daughter of Shah Mohammed Reza Pahlavi, became close friends in Switzerland where the former was studying arts.
[1][4] In a publication of the Islamic Republic of Iran it is argued that the marriage was not supported by Shahnaz Pahlavi's father, Shah Mohammad Reza Pahlavi.
[3][4] Jahanbani died on 16 April 2014 after combating cancer for several years.