Analysis of information sources in references of the Wikipedia article "Nawab of Dhaka" in English language version.
Nawab Abdul Latif was forthright in his analysis: Urdu is the mother tongue of the Ashraf (the elite class) and Bengali is the mother tongue of the Athraf (the commoners)... The Nawab family of Dhaka, the Suhrawardy family of Midnapur, the Nawab family of Shaistabad in Bakerganj all spoke in Urdu...
Urdu was never spoken in Bengal except by the immigrant Muslims in Calcutta and the Murshidabad and Dhaka nawab families.
Nazimuddin, a member of the wealthy landed nawab of Dhaka family, was related to an earlier nawab whose palace was the site of the founding of the Muslim League in 1906. The family is Kashmiri in origin, often associated with British rule, Urdu-speaking at home, rarely politically fluent in Bengali, and part of the national elite.
Nawab Bahadur Sir Khwajah Abdul Ghani Miah, also known as Ghani Miah (Gunny Meah) for short, was bom into a wealthy and prominent Muslim family that traced its origin all the way back to Persia... Nawab Sir Ahsanullah Khan Bahadur was thus born in Dhaka into one of the wealthiest and famous Muslim families of East Bengal. His grandfather, Khwajah Alimullah, and father, Nawab Sir Abdul Ghani, traced their family history back to Kashmir... the founder of this family was Maulvi Abdullah who came to India during the time of Emperor Muhammad Shah... Maulvi Abdullah left Delhi and settled in Sylhet... Thereafter, he invited his father and brother to come to Sylhet from Kashmir... Maulvi Abdullah, the founder of the Nawab family, hailed from Kashmir and moved to Delhi during the reign of the Moghul Emperor, Muhammad Shah, in search of fame and fortune... Salimullah's ancestors were originally Kashmiri merchants who came to East Bengal during the mid-eighteenth century to pursue trade and eventually they settled in the districts of Dhaka, Sylhet and Bakerganj...
It was at this time that a recently settled Muslim trading family of the city of Dhaka, originally from Kashmir, gave up trade and invested their wealth in buying land from the auctions. The founder of this Kashmiri Muslim family in Dhaka was Khwaja Alimullah.
Khwaja Alimullah came forward ... his family rose to the premier position in Dacca. This family has no connection with the old Muslim rulers of this province. It takes its origin from the Kashmiri family of Khwaja Abdul Hakim, who migrated to Sylhet and started his business ... Khwaja Hakim's one brother, Maulvi Abdullah, moved to Dacca, and from him issued the present Dacca family. Khwaja Alimullah was his grandson, who purchased the French Factory in about 1838.
It was the Sunnis who from the early nineteenth century gradually came to dominate the Muslim community in Dhaka, and one of them, Khwaja Alimullah, a Kashmiri trader turned zamindar, became one of Dacca's most wealthy and influential citizens...
Nawab Abdul Ghani Nawab Ghani, born in 1830 of Kashmiri descent, was the most influential person in East Bengal in the last half of the 19th century.
Daryā-e Nūr, also spelled Darya-i-noor, largest and finest diamond in the crown jewels of Iran.
Khwaja Alimullah came forward ... his family rose to the premier position in Dacca. This family has no connection with the old Muslim rulers of this province. It takes its origin from the Kashmiri family of Khwaja Abdul Hakim, who migrated to Sylhet and started his business ... Khwaja Hakim's one brother, Maulvi Abdullah, moved to Dacca, and from him issued the present Dacca family. Khwaja Alimullah was his grandson, who purchased the French Factory in about 1838.