Analysis of information sources in references of the Wikipedia article "Sindh" in English language version.
The area of the Hindu-built mansion Pakka Qila was built in 1768 by the Kalhora kings, a local dynasty of Arab origin that ruled Sindh independently from the decaying Moghul Empire beginning in the mid-eighteenth century.
But as many kings of the dynasty bore Hindu names, it is almost certain that the Soomras were of local origin. Sometimes they are connected with Paramara Rajputs, but of this there is no definite proof.
It was the conquest of Kutch by the Sindhi tribe of Sama Rajputs that marked the emergence of Kutch as a separate kingdom in the 14th century.
Kalhoras a local Sindhi tribe of Channa origin...
Kalhoras...were originally Channa Sindhis, and therefore converted Hindoos.
In Pakistan, the majority of Gujarati-speaking communities are in Karachi including Dawoodi Bohras, Ismaili Khojas, Memons, Kathiawaris, Katchhis, Parsis (Zoroastrians) and Hindus, said Gul Hasan Kalmati, a researcher who authored "Karachi, Sindh Jee Marvi", a book discussing the city and its indigenous communities. Although there are no official statistics available, community leaders claim that there are three million Gujarati-speakers in Karachi – roughly around 15 percent of the city's entire population.