In North India, Shaikh is both an ethnic and occupational title attributed to Muslim trading families. Many Shaikhs from North India are descended from Arabs, and adopted 'Shaikh' as their last name through marriage or their job.
In the Frontier Regions and Punjab, the title Shaikh was given to recent converts who were not of foreign descent as a polite euphemism.
Shaikh Qidwai, who claim to be descendants of the Qazi Qidwa, a son of the Sultans of Rum. The Qidwai were recruited in the household cavalry of Shuja-ud-Daula, which was mainly composed of the Sheikhzadgan. These clans had not taken any profession other than a soldier or a civil officer.
Shaikh Hashmi, who claim to be descendants of the Banu Hashim clan of the Banu Quraish tribe. The Islamic prophet, Muhammad belonged to this clan. Usually carry the title Sayyid.
Sheikh Mirza, who claim to be descendants of Umar Sheikh Mirza, the son of the conqueror Timur. They usually associate themselves with Mirza or Mughal caste, while some with the Sheikh caste while carrying the title Mirza.
↑Eaton, Richard M. (2009). "Shaikh". In Esposito, John L. (ed.). The Oxford Encyclopedia of the Islamic World. Oxford University Press. pp.251–252. ISBN9780195305135.