|Ja'afar 'Ali Khan Bahadur|
|Nawab of Bengal|
Shuja ul-Mulk (Hero of the country)
Hashim ud-Daulah (Sword of the state)
Mahabat Jang (Horror in War)
Mir Jafar (left) and his eldest son, Mir Miran (right).
|6th Nawab Nazim of Bengal, Bihar and Orissa|
|1st reign||2 July 1757 – 20 October 1760|
|2nd reign||25 July 1763 – 5 February 1765|
|Successor||Najimuddin Ali Khan|
|Died||5 February 1765 (aged 73–74)|
|Spouse||Shah Khanum Sahiba (m. 1727, d. August 1779)|
Munni Begum (m. 1746, d. 10 January 1813)
Rahat-un-nisa Begum (Mut'ah wife)
Babbu Begum (d. 1809)
|Issue||Sadiq Ali Khan Bahadur (Mir Miran) |
|Father||Sayyid Ahmed Najafi (Mirza Mirak)|
Syed Mir Jafar Ali Khan Bahadur (Urdu: سید میر جعفر علی خان بہادر) (c. 1691 – 5 February 1765) was the first dependent Nawab of Bengal with support from the British East India Company. He was the second son of Sayyid Ahmad Najafi. His rule is widely considered the start of British imperialism in India and was a key step in the eventual British domination of vast areas of the subcontinent. Mir Jafar served as the commander of Bengali forces under Siraj ud-Daulah, the Nawab of Bengal, but betrayed him during the Battle of Plassey and succeeded him after the British victory in 1757. Mir Jafar received military support from the British East India Company until 1760, but failed to satisfy various British demands. In 1758, Robert Clive discovered that Jafar had made a treaty with the Dutch at Chinsurah through his agent Khoja Wajid. Dutch ships of war were also seen in the River Hooghly. Circumstances led to the Battle of Chinsurah. British company official Henry Vansittart proposed that since Jafar was unable to cope with the difficulties, Mir Qasim, Jafar's son-in-law, should act as Deputy Subahdar. In October 1760, the company forced him to abdicate in favor of Qasim. However, Qasim's independent spirit and plans to force the East India company out of his dominion led to his overthrow, and Jafar was restored as the Nawab in 1763 with the support of the company. Mir Qasim however refused to accept this and went to war against the company. Jafar ruled until his death on 5 February 1765 and lies buried at the Jafarganj Cemetery in Murshidabad, West Bengal, India.
In 1747 the Marathas led by Raghoji I Bhonsle, began to raid, pillage and annex the territories of the Alivardi Khan, the Nawab of Bengal. During the Maratha invasion of Odisha, its subedar Mir Jafar and Ataullah the faujdar of Rajmahal completely withdrew all forces until the arrival of Alivardi Khan and the Mughal Army at the Battle of Burdwan where Raghoji I Bhonsle and his Maratha forces were completely routed. The enraged Alivardi Khan then dismissed the shamed Mir Jafar.
Jafar pretended loyalty to Alivardi Khan's successor Siraj Ud Daulah, but betrayed him to the British in the battle of Plassey. After Siraj Ud Daulah’s defeat and subsequent execution, Jafar achieved his long-pursued dream of gaining the throne, and was propped up by the British East India company as puppet Nawab. Jafar paid Rs. 17,700,000 as compensation for the attack on Calcutta to the company and traders of the city. In addition, he gave bribes to the officials of the company. Clive, for example received over two million rupees, Watts over one million Soon, however, he realized that company's expectations were boundless and tried to wriggle out from under them; this time with the help of the Dutch. However, the British defeated the Dutch at the Battle of Chinsurah in November 1759 and retaliated by forcing him to abdicate in favor of his son-in-law Mir Qasim. However, Qasim proved to be both able and independent, strongly condemned the interference of East India company in the governing of his domain. Mir Qasim formed an alliance to force the British East India company out of East India. The Company soon went to war with him and his allies. The Battle of Buxar was fought on 22 October 1764 between the forces under the command of the British East India Company led by Hector Munro and the combined army of Mir Qasim, the Nawab of Bengal:suja ud-dullah the Nawab of Awadh and the Mughal Emperor Shah Alam II. With the defeat in Buxar, Mir Qasim was eventually overthrown. Mir Jafar managed to regain the good graces of the British; he was again installed Nawab in 1764 and held the position until his death in 1765.
In 1760, after gaining control over Bihar, Odisha and some parts of the Bengal, the Mughal Crown Prince Ali Gauhar and his Mughal Army of 30,000 intended to overthrow Jafar, Imad-ul-Mulk after they tried to capture or kill him by advancing towards Awadh and Patna in 1759. But the conflict soon involved the assertive British East India Company. The Mughals were led by Prince Ali Gauhar, who was accompanied by Muhammad Quli Khan, Hidayat Ali, Mir Afzal and Ghulam Husain Tabatabai. Their forces were reinforced by the forces of Shuja-ud-Daula and Najib-ud-Daula. The Mughals were also joined by Jean Law and 200 Frenchmen and waged a campaign against the British during the Seven Years' War.
Although the French were eventually defeated, the conflict between the British East India Company and the Mughal Empire would continue to linger and ended in a draw, which eventually culminated during the Battle of Buxar.
The breakup of the centralized Mughal empire by 1750, led to creation of a large number of independent kingdoms in Northern, Central and Western India, as also North-Western India (now Pakistan) and parts of Afghanistan (all provinces of the former Mughal empire). Each of them were in conflict with their neighbor. These kingdoms bought weapons from the British and French East India companies to fuel their wars. Bengal was one such kingdom. The British and French supported whichever princes ensured their trading interest. Jafar came to power with support of British East India company. After the defeat of Sirajuddoula and later Mir Qasim the British strengthened their position in Bengal and in 1793 abolished Nizamat (Mughal suzerainty) and took complete control of the former Mughal province. The word "mirjafar" in Bengali and the phrase "meer jafar" in Urdu (غدار), are used much as quisling is used in English, and Jaichand of Kannauj in North Indian history. The word Mir Jafar is used in Urdu for Traitor as he betrayed SirajudDaula against British East India Company.