[1] His father was Ali Akbar Mokrem os-Saltaneh (in Persian: میرزا علی اکبر مکرم‌ السلطنه), grandson of Samad Khan Sarraf (in Persian: آقا صمد صراف تبریزی) and his brothers were Momtaz Homayoun and Esmail Momtaz od-Dowleh,[2][3] His father was an eminent aristocrat and diplomat.

He was recognized by the French government as counsellor of the Iranian embassy in Paris from 25 March 1946 to 27 September 1951.

Samad Khan Momtaz os-saltaneh, was the second Persian IOC (International Olympic Committee) Member.

His date of appointment was November 1923, and he remained a member until 22 April 1927, after the coronation of Reza Shah Pahlavi.

In March 1921, Samad Khan was elevated to Prince by Ahmad Shah Qajar with the title of Royal Highness.