Mostowfi al-Mamalek came from an important aristocratic and well-known family of high-ranking bureaucrats during the Qajar era, originally from the province of Ashtian.

[6] His grandfather was Mirza Hasan Mostowfi al-Mamalek I and was given the title of Mostofi al Mamalek under Mohammad Shah Qajar.

[9] One year before his father's death, Nasereddin Shah granted the title Mostowfi ol-Mamalek ("chief financier of the country") to the very young, Hasan.

[4][7][10] The Mostowfi ol-Mamalek family passed on the central office at the finance ministry from father to son throughout the 19th century and until the 1920s.

[3] When the nobility started to ridicule Hasan for being given such an important job/title at such young age, Nasereddin Shah, convinced of the young boy's talents, added the title "Aaqaa" (Sir) to Hasan's titles, thereby obliging the nobility to call him "Sir" every time they addressed him.

[4] At the age of 18, he married Nasr-ol-Din Shah's granddaughter, Khanom Esmat el Molouk, and became a member of the royal family.

[7] After a series of disagreements with the newly instated Mozaffar ad-Din Shah, Mostowfi al-Mamalek travelled to Paris from 1900 to 1907.

[7] During his trips to Europe, Mozaffar ad-Din Shah gave him multiple invitations to return to Iran, however he declined.

The society met regularly at Mostowfi's residence and eventually became part of the inter-society confederation, with Mossadegh as their permanent representative.

[13] It has been noted that, unlike some of his contemporaries, Mostowfi was patriotic and did not engage with foreign powers in order to preserve or boost his own financial or political standings.

[14] Despite his perceived popularity Mostowfi has at times been criticized for being unable to form a strong government with the ability to exercise what it presented to the Majlis.

Sources disagree on his allegiances to foreign powers with some claiming he was a Russophile and others stating he favoured the Germans and Turks.

[16] As a result of the pro-Moderates forces actions the government used the newly appointed Tehran police chief, Yeprem Khan[17] to exercise the order.

[7] During his term in office the government received a letter from the British and Russian Ministers in Tehran complaining about the lack of security on the road between Bushehr- Shiraz- Isfahan.

[7] Mostowfi's government responded by creating the Swedish Gendarmerie, seeing this as a way to keep Iran independent of British involvement in internal security.

It is important to note that being pro-German in this regard was simply seen as a political move to support a third nation that may aid in curbing the influence of the British and Russians in Iran.

[25] Mostowfi approached the Russian authorities and asked that they withdraw their troops from Azerbaijan as their presence gave the Turks a reason to invade.

In the program of his second cabinet Mostowfi proposed the abolition of the old pensions system, completion of the new Code, the founding of a secular law school to train personnel for the Ministry of Justice, the founding of several schools for girls and new laws to govern telegraphic communications.

Mostowfi also attached a number of stipulations, including the Germans giving Iran a loan and providing officers.

In a show of good faith the Germans secured the withdrawal of Ottoman Forces and offered to help financially but did not agree to the stipulations.

[31] Mostowfi's fourth term of office as prime minister was marked by severe drought and famine that devastated the country.

One of his most formidable opponents in politics at the time was Hassan Modarres who made numerous efforts to pull down Mostowfi's cabinet.

Mostowfi's cabinet finally collapsed under pressure from political opponents despite the full backing of Ahmad Shah Qajar.

In order to legitimize his rule he needed a prime minister who had the confidence of the politicians and the general public, so he chose Mostowfi.

Hassan Abad was built by Mirza Yousof Mostowfi al-Mamalek, Naser ed-Din Shah's vizier.